myallmotoreg

Im new so go easy. I have a d15b vtec with a p28 in right now. just bought a b18c5 obd2 with harness and ecu. if I want to use the obd2 ecu then i could just buy a obd1 to obd2 jumper right????? but I would like to use my p28 but it sounds like alot more work, but it has alot more benifets (i cant fu*kn spell) help!!!

dc2vu

I dont think any company makes the obd1-obd2 conversion harness...for that price you might as well have your p28 chipped and upload a stock type R basemap. only difference will be that you'll have the ability to tune in the future and no knock sensor is read through that ecu

JDM_Ej

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2vu &raquo;</TD></TR><TR><TD CLASS="quote">I dont think any company makes the obd1-obd2 conversion harness...for that price you might as well have your p28 chipped and upload a stock type R basemap. only difference will be that you'll have the ability to tune in the future and no knock sensor is read through that ecu</TD></TR></TABLE>

There are companies that make them, but why would you do that...?

Use your OBD1 harness thats on your D15 right now. Extend any wires you need to make it all fit correctly, and use an OBD1 distributor (or modify yours) and chip your P28.

myallmotoreg

where could i get a base map? and what chip? i can soider good so could I do it myself. would the obd2 senors be differnt then my d15 obd1. my dizzy off of my sohc wont work will it?

B18C5-EH2

Dude let me help you from my own personal experience.

Your swap will be 100% easy if you listen to me provided your current D15B VTEC is wired correctly in terms of VTEC working.

1. KEEP the ITR engine harness! It plugs into your Civic's chassis harness at each shock tower and this allows you to keep the ITR injectors, distributor, etc.







At most you might have to wire up the VTEC wires from your shock tower harnesses through the firewall and into the ECU plugs if your VTEC is currently straight wired from the sensors on your D15B VTEC.

2. KEEP your P28 and have it reprogrammed to run the B18C5.

I currently have mine on Uberdata and it was tuned locally, but if you have nobody locally that does Uberdata or Crome then contact Kenji Plennert at kenji211@tampabay.rr.com and have him chip your P28 to ITR specs. Mine ran stellar with his off-the-shelf P28 program and honestly I didn't gain much more from Uberdata tuning except for the cool drag launch and check engine shift light features.

Lastly ditch the idea of using the OBD2 ITR ECU. It will need an extra o2 sensor, CKF sensor wired up, they throw bullshit check engine codes that OBD1 doesn't, and worst of all, it won't have as much whp/torque as a good rechipped P28.

Do you have any other specific questions regarding this swap?

myallmotoreg

you guys kick ***, i live for this ****, I'm going to swap it on my next day off. i'll let you know how it goes. and thanks.

dc2vu

wow...b18c5-eh2 has probably just given you the best answer ive seen in the longest time without having to be a dick about it ...anyways, hes right, the swap is extremely simple...i did the exact same thing with my motor swap

jpcarlos1823

Hey guys I have same thing b18c5 on an eg civic but I'm having a hard time where the vacuum hoses are going , would it be the same as b18c5 connections or no?

doctorake

start a new thread instead of bumping a 7 year old one