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<h1 class="BlogItem-title" data-content-field="title">Honda p28 ecu q31 blown. my check engine light turns on every now and then.</h1>
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<p class="" style="">Honda p28 ecu q31 blown P28 equivalent ECU socketed for use with Hondata S300 systems only, it fits S300 V1, V2 and V3. org is not in any way affiliated with Honda Motor Company VerticalScope Inc. So Pin 30 goes to Q5 and R131 From there Q5 drives Q31. the main feature i was looking for was ecu controlled boost, but it seems a bit Second, you will be making the connections to your ECU's wiring harness for the wideband's power, ground, and 0-5v signal output. Delving into the intricate network of connections within the P28 Electronic Control Unit (ECU) unveils a fascinating landscape of interwoven circuits and pathways. +12V and the switched ground which would basiclly take out Q31 and R58 and R59 I’m assuming this is because the ecu isn’t giving the car the correct air/fuel mix as the owner has said he’s tested for compression, spark etc, and a local garage diagnosed it as an ecu fault. Opens in a new window or tab. 6th Generation Honda Civic (1996-2000) chipped p28 ecu coilovers hid lights front strut brace rear strut brace Nov 21, 2018 · The issue is this - Fuel pump not priming with chipped ECU. Apr 17, 2010 · I just picked up a P28 with a burnt Q31 transistor. 3603187006; My Account. e. i have a eg hatch with the hondata obd2b p28 ecu in it with Sep 7, 2021 · Convert your Honda Acura obd1 ecu from an automatic ecu to a manual ecu. Mar 3, 2008 · ODB2 & JDM B18C conversions: ( ECU sends +12v, IAB wired to GND ) above procedure not needed Remove: Q34 cut control leg of IC15 short and solder signal carrying wire to it (thread wire through hole)and solder other 515 X High Side Switch pins in place hi i have a auto p28 converted to manual and i bought a converter harness on ebay obd2b to obd1 and once i pluged the ecu in it burnt out Q31 and then i got a nouther ecu on ebay a po6 a manuel one and it did the same thing and i burnt my intake temp sensor too it made it smoke and the tip melt. 4 days ago · Solid CEL, Code 9 --> CYP Sensor. Honda P28 Ecu Wiring DiagramHonda P28 Ecu Wiring HarnessHonda P28 Ecu Service ManualHonda P28 Ecu User ManualHonda P28 Ecu Manual BooksHonda P28 Ecu Schemati May 25, 2008 · I know that Honda has 3 stage VTec, that's what this D15B has. Fitment: Honda/Acura long framed ECUs Feb 5, 2006 · These are some of the ECU’s I’ve researched (I had a longer list, but can’t find it now): ECU/EMC CODE LETTER OTHER #’s YEAR MAKER MODEL Trim OBD TRANNY 37820-P28-A02 AWL 760-840433 92-95 Honda Civic EX 1 5-speed 37820-P28-A01 ARM 760-620375 92-95 Honda Civic/CRX EX 1 5-speed 37820-P06-A02 AUI 740-327690 95 Honda Civic LX 1 5-speed Tags: ecu, p28, chipped, refurbished, p06, p75, p72, obd1, chippable ecu, honda, powder coated, boost by gear, repair, refurbish, fix OFF ROAD USE NOTICE Items sold through boostednw. In the US, P28 ECU was used in both D16ZC and B16A engines. Jul 18, 2018 · My ECU finally came in the mail and I was able to install it tonight. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Mar 2, 2011 · What base map should I get if I choose to go with HA Motorsports socketed and chipped P28 ODB1 VTEC ecu ? They give choices for : P28 D16Z6, P73 B18C-R , P30 B16A, P61 B17A, P72 B18C1. Jun 8, 2022 · Can I just buy a p28 ecu and engine harness and connect everything to the d16z6 and be done like that? Also the d16z6 I have has vitara pistons, eagle rods, arp head studs. Join us as we demystify the intricate web of connections within the P28 ECU, providing clarity on the indispensable links that transform electrical impulses into mechanical motion. I removed the ecu and replaced with a new one and have no issue. or Best Offer +$3. y8 intake manifold is better flowing than y5. Feb 1, 2010 · How to install a 1992-1995 Honda Civic P28 performance chip in the ECU. I actually have a p28 and a s200 sitting on my desk that i jus pulled out of my friends 00 SH. This transistor fries/burns when the purge control solenoid connector on the engine harness is mistakenly plugged into the intake air temperature sensor instead of the purge control solenoid. Properly linking these components is crucial for achieving optimal engine management and ensuring your vehicle runs smoothly. Forced induction, datalogging, real time programming, Bluetooth and engine protection are but a few of the comprehensive s300 features. net chipped obd1 ecus will plug & play into 92-95 honda/acuras. Either this is different for the two engines (which somehow I don't believe as I think the ECU was a D15 P06 auto originally) or it's also broken within the ECU. The P05, and P06 ECU are similar but do not have VTEC hardware. I am working on a friends fried P28 Mar 13, 2005 · In order to run the P28 ECU u will need to chip the ecu and run the hondata. I had to add the R54 resistor and the 2 ceramic disc caps. a6 cam. Started to remove dizzy but only got as far as unplugging one plug. This video will show you how to replace a burnt out Q31 transistor in a P28 ECU. I have a P28 with a 1720 main board in it that Q31 went bad on. ebay. this means that the ecu is for an automatic car. I bought another jumper and chipped ecu. com Still gotta get another $250 worth of parts with head gasket set, plugs, wires, cap, rotor and timing belt for the Z6 and I am also still considering having a basic valve job done and new seals put in. When I did the 5spd swap and p28 ecu, some May 26, 2006 · You said you have a aftermarket adjustable cam gear? Good, Use that too. (see photos) Powder Coated Case: This is the new option to have the casing powder coated in our hammertone grey just like the ECU lids. this is the same way, except for being a "5" instead of a "0". org is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Brand New. HONDA ECU CHIPPING KIT This ECU chipping kit will come with everything you need to chip your own OBD1 Honda/Acura USDM or JDM ECU. ECU Chipping In order to use Uberdata, you need to add a few additional components to the original Honda ECU. The guys at PGMFI. The only thing is the engine is a Jap import. Sep 23, 2011 · Because it went from 90some hp to 127. BMulator This device replace completly the Chip in your Honda/Acura OBD1 ecu to have the capability to change the contents/parameters present on the emulator in Realtime without having to reburn the chip every single time or stop the engine in any case. FORMAT: xxxxx-xxx-xxx. Started the car fine and ran for the first two days but now won't prime the fuel pump. It's your chip itself or the ZIF socket you are using. P30 Obd1 Ecu Aus Honda Civic Eg6 B16a2 In Sachsen Coswig Kleinanzeigen. The options may be chosen on the product page ; Honda P28/P06 ECU Cover – Blue $ 29. Make these connections close to the ECU, 3-6 inches from the ECU connectors is perfect. HA Motorsports Professionally socketed OBD1 VTEC ECU. The part number consists of three components: Honda's part number for ECU, which is always 37820; Three characters (which are loosely related to the model of car/engine). If you do not need the chip adapter simply unplug and use RTP pins directly into the socket on the ECU Board. its a 95 coupe with the b7 in it. Switching to OBD2 would allow use of a different ECU, but I want to keep OBD1. Pics of the Lude. 99 Current price is: $59. we840226 (3) 100%. Jun 15, 2011 · Short update, Just ordered THIS OBD0 to OBD1 conversion kit and VTEC harness from rywire. 0. Dec 7, 2021 · vidéo explicative pour comprendre et utiliser le logiciel Honda Tuning Suite dédié aux calculateurs des moteurs HONDA P28 P30 etc utilisés sur la majorité de I find it difficult to guess which ECU (it's probably a Honda?) you're talking about from your posting. Dec 18, 2015 · How can you tell if the q3 is blown? I know what a bad capacitor looks like. and ill post all my pics of my falla main relay honda; falla muy comÚn en honda rpm bajan y suben; honda civic ek9 type r; especificaciones de motor gsr b18c1; modificaciones para tu motor; tutorial chipeo ecu obd1 de honda "p28" turbo, supercharger o nos en los motores honda May 17, 2003 · The P30 ecu has a knock sensor, and is made specifically for the B16A engine. The car had this same setup, then got stolen. Joined: Tue Jul 27 Jan 16, 2025 · hi i have a auto p28 converted to manual and i bought a converter harness on ebay obd2b to obd1 and once i pluged the ecu in it burnt out Q31 and then i got a nouther ecu on ebay a po6 a manuel one and it did the same thing and i burnt my intake temp sensor too it made it smoke and the tip melt. All ECU’s are cleaned and tested. com or pm Apr 27, 2012 · Honda Civic Gen Tech and Builds / Show Offs. g P72 Standard Case: This is the standard bead-blasted casing. No programming is required, and it has a maximum amperage of 92 A. And vtec does work with the p28 ecu since the p28 is off a sohc vtec motor. The middle pad (top and bottom) on Q31 was damaged so I The s300 version 3 is a plug in module to the OBD1 factory Honda Engine Computer (not included) which vastly expands the capabilities of the factory ECU. and now u also have a ecu with a 8000 rpm redline and or 8300 rpm fuel cut which is as high as youd want to run Feb 1, 2008 · Last build. Jumper harness at ecu. I find it difficult to guess which ECU (it's probably a Honda?) you're talking about from your posting. L12A1 GD5 ECU pinout? fit, honda, jazz FS: P28 ecu. P28 is the type of ecu, the "A" is for made in united states, and "0" is a manual ecu AUTOMATIC P28-A5. Test1: I connected and tested an old used P28 OBD1 ECU (PCM) to know if it was still working. I bought a 4 wire O2 sensor and P28 ECU. but what is QM1 and can I even buy it somewhere? Also, does anyone know what might have caused the blowing of those parts? Which circuit does Q31 belong to? Jun 19, 2024 · This video will show you how to replace a burnt out Q31 transistor in a P28 ECU. I was worried about the whole vtec/nonvtec difference of the computer/engine. This Kit Contains: 1x SST 27SF512 Blank Chip 1x 28Pin DIP Socket 1x 74HC373 Logic Chip 1x 4Pin Datalogging header 2x Capacitors for C51, C52 1x Replacement capacitor for C14 The USDM Kit also contains: 1x Jumper for J1 jumper may vary 1x Resistor for R54 The JDM Oct 8, 2009 · Current commuter- 2011 Honda CR-Z EX 6MT Crystal Black Pearl :smilejap: *Prelude Sold* 8/25/2010. Mar 24, 2008 · which ecu is better and will work great with a 94 b18c1 p28 or p72? is going on a 97 ek hatch with the 96-98 civic ex EWH with obd2a to obd1 jumper harness. Chipped obd1 ecu vehicle plug & play compatibility : Phearable. Three good reasons to swap. Put all that together and get yourself a chipped p28 ecu with y8 maps and get maybe crome or something like that. My D15Z6 ECU doesn't show that, checked it directly after testing the "P28". All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. im going to take your advice and get crome, because if im not going to use most of the features that hondata offers then it does seem rather pointless to spend that much money. Kenji211. With a d16z6 with obd1 p28 chipped ecu. This part replaces the old Tobisha that is located at IC17 on the p05, p06, p28, pr4, p75, p72 and p30 obd1 ecus. I assume it was caused by a short in the dash wiring? Hacking up Honda's ECU: FAQ: Last visit was: Sat Sep 07, 2024 1:28 am Chipped P28-A51 repaired burnt Q31, code 14 IACV. see if i can find the cause for why my ecu blew so it doesnt happen again. Honda P28 Ecu Wiring DiagramHonda P28 Ecu Wiring HarnessHonda P28 Ecu Service ManualHonda P28 Ecu User ManualHonda P28 Ecu Manual BooksHonda P28 Ecu Schemati Sep 25, 2022 · DIY Honda ECU Repairs- P30 P08 P27. Q: From What Cars Did P28 ECU Come? This ECU came from the Honda Civic Si or EX of the 92-95 year model. Our S300 ready P28 VTEC ECU’s are available with or without the S300 system. Sep 11, 2006 · CROME tuned p28 ecu 12,5:1 cr A forum community dedicated to the Honda D Series engine owners and enthusiasts. And the z6 is cheap and drops right in with stock mounts. org (Blundar and others) have spent a lot of time figuring out what all the functions are on Honda ECU's, but I suspect RACEPAK is refering to a Auto ECU function that isn't fully understood. 99 Original price was: $69. While this covers installing a chip on the USDM version (US Domestic Market) Honda P28 ECM, the procedure is the same for almost all 1992 Exploring the Wiring Configuration of Honda’s P28 ECU. And should not be used by anyone in my opinion. P08 is similar, but does not support purge solenoid, heated O2, and is foreign(JDM). Free delivery. A Honda ECU will always be read like so: 37820-P**-*0*, where - 37820 Identifies the part as a Honda ECU; tutorial chipeo ecu obd1 de honda "p28, p06, p72" las computadoras de honda obd1 se pueden chipear para que la ecu tome los valores de chip que un tunner programe ya sea para turbo o na. boomslang. Honda OBD1 Q31 Transistor replacement. This is a clean, like-new finish to the standard ECU casing. About how much boost do you guys think I can run reliably daily and also max boost and I also have a high flow fuel rail 650cc injectors and walbro 255 pump. Putting a switch in shouldn't cause a problem. The P28 ecu does not have a knock sensor, but it can be converted to work for DOHC VTEC engines. Dec 28, 2024 · Hacking up Honda's ECU: FAQ: Last visit was: Sat Dec 28, 2024 6:46 am: Post subject: blown R135 resistor. I reconnected the dizzy plug. Will work with Hondata s300. P28 ECU Honda Civic Engine Computer P28 A02 P28 A01 ECM MANUAL. y8 head has a higher compression ratio than y5 head. I’m not su Jun 28, 2010 · sorry mate. Two of the more notable tools written for the '92-to-'95 Civic and Jan 12, 2004 · Honda ECU Part Numbers Decoded Honda ECU part numbers are a series of 3 alphanumeric sections. www. Feb 13, 2008 · i have disconnected my computer a few times with p28 ecu installed in my 92 honda accord wagon w/built h22a and t3/t4 turbo. How to Wire B16a with P28 ECU In this guide, we’ll explore the steps to connect a popular performance engine with a compatible electronic control unit. 5l SOHC VTEC - D15B P28 - Civic EX/Si 1. Civic P28 ECU Pinout Guide. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada When using ROM Editor, an ECU from our conversion table can be adapted to drive any other Honda up to the current models. Sponsored. They plug the IAT sensor into the wrong plug. 1990-1995 Accord and 92-95 Prelude ECUs Jul 5, 2007 · thank you, that makes sense. $ 59. My issue was also with a P28but the ECU doesn't matter. VTEC ECU, P28, P30, P72, Hondata s300 Packages. you need to run one wire from the Vtec soleniod to A4 pin on the ecu,then i simply made a jumper wire between D6(vtec pressure sensor) and A4,this allows Vtec to engage on the OBD2 motor,and also stops you from throwing code 22 (vtec pressure sensor). i am assuming it is me cause i am a noob to tuning. Come join the discussion about performance, builds Nov 14, 2021 · Qué tal amigos en este video toca reparar una ecu p28 cambio de transistores, uno del vtec. Mar 27, 2008 · The Auto trans ECU must have additional featues, above and beyond what a manual ECU has. d-series. In this video, I performed 3 tests. I think they had nvsram solutions for the p28, seems like they have a little more information over on the pgmfi forum under the “rtp” (real time programming) section. Q: Is Chipped P28 ECU Better Than Usual P28? WARNING! THIS PRODUCT IS FOR OFF-ROAD MOTORSPORT/COMPETITION RACING USE ONLY, NEVER TO BE USED ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. The Q31 transistor is in the purge control solenoid circuit in the ECU. Sep 25, 2010 · These are OBD-1 ECU#s: P05 - Civic CX - D15B8 P06 - Civic DX - D15B7 P07 - Civic VX - D15Z1 SOHC VTEC-E P08 - JDM Civic (EG4) 1. The BMulator can fully simulate the protocol of the Moates Ostrich emulator, which in fact, you can simply connect to the BMulator in your Dec 31, 2024 · This is a Honda Civic P28 Engine Control ECU (37820-P28-A51) for 92-95 models. 5L SOHC VTEC- D16ZC types. I assume it was caused by a short in the dash wiring? How does a P28 ECU improve my Honda’s performance? A customized P28 ECU can significantly boost your Honda’s performance by allowing you to modify the air-fuel ratio, valve timing, and other critical engine parameters. Nissan Ga15de Ecu Wiring Help Datsun This is for Repair of your Q31 transistor inside the ecu. I know of 10+ people right now that are running a chipped p28 ecu w/ hondata s200 on their prelude. Other. com including tuning products may be designed for off-road/race use only, and are not applicable for vehicles in states that require pollution controlled vehicles. 00. i definitely dont need a monster or a trailer queen, i want something that i can drive and have fun with. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Find many great new & used options and get the best deals for Hondata S300 With P28 ECU at the best online prices at eBay! Free shipping for many products! Apr 17, 2020 · Capacitor repair kit Link:https://www. Posted: Fri May 07, 2004 7:05 pm . He’s bought a p28 unchipped from tegiwa, and has ordered the wiring harness for the ecu to fit. and thus use the vafc to correct this. Dec 22, 2007 · Next I revved the engine a couple of times to approximately 3000-4000rpm and with a few seconds my ECU was smoking like a mofo I killed the engine immediately. The basemap that came on it runs the car pretty well, and I can't wait to learn how to Oct 4, 2004 · p72 with a vafc to correct for fuel tuningthe p72 has the knock sensor and runs alot leaner fuel curve than the p13 which in turn makes more power. Includes: ECU Lid and Mounting Hardware. us The p28 ecu won't really give you any more power. I had a burned R77 5R6 on a 11F0-1500 board this week. Feb 3, 2011 · TheTruth Knows Some Stuff About 240's! Posts: 452 Joined: Tue Mar 14, 2006 3:52 am Location: North, New Jersey P28 Spec ECU Honda GSR ITR Vtec TYPE R D16y8 B16a B18c H22a H23a F20b POPs BANGs. Through comprehensive explanations and illustrative examples, empower yourself with the knowledge needed to navigate the intricacies of automotive electronics with Fully Refurbished Chipped/Socketed P28 ECU - This Honda chipped P28 ECU comes with adapter for chip as well as the socket for a demon/demon2 board or other RTP. P30 - DelSol Si/Civic SiR (B16A DOHC VTEC) May 4, 2024 · I find it difficult to guess which ECU (it's probably a Honda?) you're talking about from your posting. Mar 13, 2007 · OBD-I computers like the popular P28 ECU have received endless support and development from the members of the PGMFI group. 13g Turbo. I have an ecu that had the same problem, only caused no starts at time. Just Bought P28 And Nothing In J10 Honda D Series Forum. 99. I got the replacement transistor from xenocron but need some help putting it in. Honda & Acura ECUs, stock & programed. Feb 2, 2011 · I searched around the net and found a company called Element Racing who did one of the first swaps on sr20ve. Aug 6, 2013 · Im practicing chipping ecu's by working on a P28 ecu of unknown origin. P28 S300 Ready ECU. Quick video of me socketing a p28 ecu ready to install a hondarulez rtp emulator. Well, since later down the line ill be going lsvtec, ive got a p28 ecu that im using. Note: This ECU requi Jul 2, 2007 · Motor Mayhem & Suspension Satisfaction. The switch might be bad. A burned “Q31” resistor can happen when the IAT and Evap Purge Solenoid (EPS) are plugged incorrectly to each other. Vehicles pre-92 & 96-01 vehicles will require a ecu plug conversion harness to use the ecu. 5l SOHC VTEC - D16Z6 *Note that this ECU has also been used with the D16Z6 and the B16A in the US. Save an extra $10 on any $180+ purchase w code P10. my qustion is Does your obd1,obd2 ecu not activate your main pump/relay? This is one of the main part that controls your main relay from functioning. This is our P28 equivalent ECU socketed for use with Hondata S300 systems ONLY (Fits S300 V1, V2, and V3). Apr 30, 2024 · But if there is a 5 instead of 0, that P28 ECU is Automatic. I'm not sure if it matters, but it's a USDM ECU, 37820-P28-A02. I was going to replace c14 and hope that fixes it though it looks good. com. This helps rule out if the Ecu is bad or not. Nevertheless, I think we can can guess that 'R' in 'R135' stands for resistor. They plug the IAT sensor into 3 days ago · Q31 seems to me like a transistor - that shouldn't be a problem if anyone knows what kind it is (NPN / PNP, maybe pre-biased?). Chips In stock ecus in stock with trade in discounts. p28 ecu is a good move its obd1 so will need a conversion harness and u will not hav any immobilizer problems. 37820-P72-A01. Whether you’re seeking more horsepower, better fuel efficiency, or greater torque, the P28 ECU can make it happen. Register; Login; Honda ECU's (11) PNP/Standalone (2) Emulation (12) Show All Engine Management. I have checked the S300 with my P28 and it appears to be undamaged, and have also checked the car with it's standard P13 and it appears to be fine. 602 sold. Basically its just separating the engine and trans control sides and wiring the input side of things onto the piggybacked ecu so both ecus get all the same input signals, with the stock ecu controlling the trans outputs and the other one controlling engine outputs. you might as well us a y8 head while u there and y8 head gasket u should see slightly over 130bhp. Mar 14, 2013 · I've got an 88 crx obd0 chassis. You pay to ship your ECU to us and the shipping applied (that you pay for on this item) covers the shipping back to you. Obd1 dizzy. Tested on a engine simulator while testing datalogger on HTS softwareVteckn Sep 21, 2006 · I swapped a JDM D15B (B16Z6) into a 93 hatch. Usdm Obd1 Civic Integra Ecu Socketing Instructions Ha Motorsports. Jul 19, 2012 · d-series. D14 Pinout What Is The Color Ofthe Wire Honda Tech Forum Discussion. Strip approximately 3/4 inch of insulation off of the wire going to pin A25. Remanufactured. The ecu is for a auto trans. It could be the jumper harness that's bad. * note: some ecu's may have been professionally socketed and ready for chip, but J1 is not in place so it functions as a stock virgin p28. This OEM part is ideal for Civic EG and EH models. Maybe even get a good clutch in there too :TU: Good Luck. Si eres nuevo por aquí suscríbete para ver más contenidos de autos hondata 0bd2b p28 ecu blown. we have been running a p28 in it for a while so i popped my chipped p28 in i burnt justa stock basemap for a p28 ecu onto the chip and we started Honda P28/P06 ECU QuikMount™ System – MATTE BLACK $ 69. This is a common problem when people do swaps. ECU P28 FIX BY AUTO PERFORMANCE JC-R Aug 30, 2015 · Purchased a P28 ecu off ebay just to start the car and check for vacuum/fuel/coolant leaks. Feb 20, 2008 · ok so i picked up a complete engine management system from someoe and i am having an issue. Junk. I know it's not the fuel pump because I took the p28 out and the conversion harness and hooked up my old Y7 computer and the pump kicked on. I assume it was caused by a short in the dash wiring? Oct 20, 2006 · i have a 92 Gsr with a b16 and a p28 mugen chipped ecu. Free returns. – Socketed and ready to use with the Hondata S300 System. d15b7 stock block Blown. P05, P06, P27, P28, P30, P61, P72, P74, P75, P27, P91, P08, PR3, PR4 Jun 24, 2011 · P28 is the stock ECU; which is also supported by aftermarket software that lets you write chips for the ECU(Crome, Neptune, eCtune, Hondata, etc. I would do this and for sure you would get into lower 16's with no problem. Solenoid might be bad, make sure the P28 ecu was swapped in with the motor, although if it's hitting 8k I would guess it is. com/itm/174308462751?hash=item289598109f:g:YMMAAOSwmBRe25qaSST Chip Link:https://amzn. the board numbers are 1992-1995 Manual D16Z6 VTEC Motors:JDM Honda ZC P28 ECU for Manual D16Z6 VTEC Applications 1992-1995 (1992-1995 - ). if you do this u will basically have a d16y8 engine next move would be, y8 Aug 14, 2005 · You need a obd2b to obd1 conversion harness. The engine was 1. The middle 3 digits are the main identifier of the ECU and used in the table above, first column, ECU Code. The only reason i like this is because honda ecu's are cheap or free and they run a map sensor. I also installed the datalog header and removed and jumped the rp18 resistor. 96 shipping. Engine Management Next I revved the engine a couple of times to approximately 3000-4000rpm and with a few seconds my ECU was smoking like a mofo I killed the engine immediately. MANUAL P28-A0. It has the two solenoids. For example a P28 ECU from a 94 SOHC Civic EX can be adapted to drive a ‘93 VTEC Accord, 99 Civic Si (B16A), 2000 Type R Integra or Prelude all normally aspirated or with boost pressure. Honda P28 Ecu Diagram P28 - Civic EX/Si/Del Sol Si Transistor for Honda ECU spots labeled Q34 or Q31 Q31 is the transistor that commonly blows up. Crome is garbage. This part is also located in some obd2a and obd2b ecus aswell. $170. entre las mas comunes son: Apr 27, 2005 · - 93 civic 4 door (b7/z6, fidanza flywheel, stage 1 clutch, eibach springs, kyb agx shocks, stainless steel brake and clutch lines, rotors/pads, 17's, cai, full exhaust, full camber kit and control arms, chipped p28, Rota Slips 15", ported and polished head and intake, rebuilt and bored, performance muffler bearings and turn signal fluid) Jul 23, 2005 · d-series. org is generated by its users. . The first block is the Honda part number denoting it is an ECU. $349. e85 fuel. P28 - Civic EX/Si/Del Sol Si Transistor for Honda ECU spots labeled Q34 or Q31 Q31 is the transistor that commonly blows up. but without the vafc you will experience a bog when vtec engages bacause of a lack of fuel. There isn't an American OBD1 ECU to control both solenoids on the head. This guide provides a comprehensive overview of the wiring diagram for this specific model, helping you navigate the various connectors and pins efficiently. Replacement Capacitor Kit for USDM OBD1 Honda ECU p28-p06-p72-p75-p05. The a7 is a ground trigger to the main relay. Content on d-series. if it is the same then i know what to do if not i need to know what to change this is my question thanks for all the help all. $10. The thing is that I was testing another p28 ecu with a fried q31 transistor, and right after that I got the problem described above. PROBLEM - When you put your chip and/or ZIF socket in the main socket, you most likely bent the legs of the chip / ZIF socket in a little bit to get it to fit better. Will work on p05 p06 p75 p28 auto to manual. These concepts can be applied to Uberdata, Chrome, and many other similar software that uses the stock honda ecu with a programmable chip. Oct 30, 2006 · With all the questions on "What kind of ECU do I have" popping up lately, I thought it would be a good idea to post the info in a single page instead of having this info off-site (where said site may disappear). Understanding the wiring connections of your vehicle’s engine control module is essential for any tuning or repair work. What is a P28 Equivalent ECU? What is a Wideband Oxygen Sensor? 92-95 Civic CX upshift indicator troubleshooting; Supercharger set up information; OBD1 ECU Knock Sensor Function - Why to disable the knock sensor; Cause of Burned / Fried Q31 Transistor in OBD1 ECU's; Dictionary ECU Socketing / Hardware Modifications / ECU Conversions: Feb 16, 2006 · For my first purchase I was thinking of an ECU, maybe a P28 or the P06 with an OBD2B to OBD1 harness. ). Aug 30, 2015 · Try the p28 Ecu in another car. 98. e. Email shadetreebr@yahoo. i. 2025 Prep Sale. Click here to view our technical FAQ/Article on ecu tuning. *(better value if you want to chip it, all you have to do is add J1 jumper) If the ecu is socketed, it was either done professionally by us, or meets/exceeds our quality standards. Car runs fine but I need to wire up the O2 sensor. 0) so I could use it to tune other similars honda models than buying the hondata s300 which only could be used in my car. my check engine light turns on every now and then. It is laser cut out of acrylic for a precise fit and features our signature logo screen printed so you know you’re getting a quality piece. Buy It Now. Free shipping This ECU lid is designed to work with all P28 style Honda ECUs and pairs beautifully with our new QuikMount™ system. Mar 4, 2009 · Now ECU wise we used the P28,since its converting to OBd1 this was the best choice. Home Sep 17, 2012 · ECU Pin 30 controls IACV via two transistors and a few resistors and diodes. Test 2: I connected the ECU Apr 15, 2020 · Hi David, Hope you doing well! I thought about save money but one advantage of chip the ECU is that if I would buy the device to tune in real time (moates ostrich 2. If you are Local email us or contact us on facebook and we will process manual order to accommodate drop off/pickup service. The previous owner started chipping it but didnt finish. to/2SKu73wHave free time and The s300 version 3 is a plug in module to the OBD1 factory Honda Engine Computer (not included) which vastly expands the capabilities of the factory ECU. P28 ecu will trade for honda prelude parts Honda P28 Ecu Wiring DiagramHonda P28 Ecu Wiring HarnessHonda P28 Ecu Service ManualHonda P28 Ecu User ManualHonda P28 Ecu Manual BooksHonda P28 Ecu Schemati Dec 18, 2022 · I've done it with a few different setups over the past 20 years, just never a Honda. Oct 22, 2011 · Secondly are there any advantages with using a p28 as apposed to a p30 I have pieced together bits of information and always believed that the p28 was a bit more versatile than the p30 but after reading some posts in this section of the forum i am under the impression that the p28, p30 and a few others are all more or less the same. This is almost always 37820. Select options This product has multiple variants. Get the best deals for Honda Ecu P28 at eBay. the board numbers are May 11, 2011 · there seems to be a bit of confusion on differentiating between a manual and automatic ecu, let me clarify. g. Made in Japan, it offers easy installation and is designed for the front placement on the vehicle. WIRING DIAGRAM OF HOT WIRE ECU Part Numbers. Jun 25, 2013 · Chipped ecu's typically are tuned with Crome. Disconnect the switch and hook the wires back up without the switch. This is a used JDM item that may have some aesthetic imperfections, please see attached photos and confirm proper fitment prior to pu Dec 4, 2007 · I recently put a b18b1 engine in my 90 honda civic hatchback. now my car doesn't boost to 10lbs anymore only 4lbs and my car seems to stay in cold start idling at 2k sometimes bouncing back and forth from 1500-2500rpm. So its possible that the two pins shorted. com is recommended over at Honda-tech as a place to Mar 21, 2005 · ya i read that thread and my question was do i do it the same as he says on there cause he shows how to chipp a p28 not a pr4. 2007, 2014, ecu Αντικατασταση q31 σε P28/P30 Πληρης ανακατασκευη με τα καλυτερα υλικα / chip socketing / επισκευη καμμενου q31 (D1780 transistor) / και ενα χρονο εγγυηση καλης λειτουργίας #HondaGreeceEcu Jan 3, 2010 · Neptune dealer, Crome dealer, turbo edit, bre, nistune, street tunes, dyno tunes, ecu chipping obdo and obd1, ecu repairs, no basemaps, homemade conversion harnesses, homemade led gauge clusters, in co springs. You want a boosted Honda , buy a hondata S300. 800cc HiProfile injectors CROME tuned p28 ecu 12,5:1 cr I ♥ My Honda Civic! May 19, 2023 · Honda Ecu Master List My Pro Street. I repair the following 1992-1995 computers. It is boosted and i want to know if the p28 will be fine to run the ls. my car is out of commision so we got in my buddies coupe. 99 Add to cart; Honda P28/P06 ECU QuikMount™ System – GLOSS WHITE P28 Ecu For sale. so i tryed to read codes but i cant find a light on my ecu. How do I run the 4 wires from the O2 sensor? Thank you. Dec 14, 2020 · I have a chipped p28 with AEM uego wired to the conversion harness, and the gauge won't get power (won't turn on), and I can't datalog with HTS, just like when you plug the datalogging port but won't turn the key. If you can try and get me the values for R58 and R59 The boys do not use a IACV pigtail. Jan 24, 2007 · This page will explain how to chip your ECU as well as the basic process of burning a ROM chip. (see photos) ECU Covers Option: We have two ECU cover/lids options for you to choose from: P28 ECU Honda Civic Engine Computer P28 A51 P28 A52 ECM AUTO REBUILT WARRANTY. However the obd1 ecu's can be chipped and reprogrammed/tuned for your particular setup. They stole jumper and ecu. 0 . For those who don't know what a Honda ecu is capable of here is the list: This setup is using neptune and the demon realtime board. my question is is it the same thing cause i noticed 2 or 3 differences in that ecu in the wright up and my pr4. Do it right. Same source as before. Honda OBD2 GSR ECU Pinouts, Honda ECU Pinout Diagram, OBD0 Pinout, P28 Pinout Diagram, Honda P28 ECU Pinout, OBD2A Pinout, P72 ECU Pinout. (no knock sensor though) Get a Moates ostrich eeprom emulator, you can write it with the car running. People that put thousands into their cars and than cheap out on the most important part of the puzzle baffle me. Only symptom was no ignition light on the dash. About my repair service. nothing fancy. They share the same kind of 2-wire round connector, so its easy to cross them by accident when performing an engine swap in a 92-95 Civic and 94-95 Integra. 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