I bought a hondata socketed p28 from a very well respected shop and I noticed that where my harness plugs in, the label on the inside reads(p75) and w/ all of hondatas work taken off of the ecu, (wanting to return it to stock) it will not run my d16z6. I have been told that cutting jumper j1 would return it to stock. anybody know exactly what needs to be done to take it to stock, and why is the plug labled p75, and the label on the outside of the ecu reads p28? WTH

 

Sounds like someone converted a P75 ('94-'95 Integra LS) to VTEC and put it in a P28 case. It will not run your D16Z6 properly if you cut J1. The best you can hope for is to get a stock P28 .bin file on a chip and plug it in. The P72 and P75 ECUs can get a little funky with the AFR when they don't have their native code installed. If you gotta smog it, you will be safer with a legit P28.

 

thanx man , from doin' a little bit of searching I have come to that same conclusion. so now I have a spare ls/vtec/hondata socketed ecu laying around. best 200 bucks Ive ever spent

 

I can help you out, PM me if you want

 

As long as its a good vtec conversion on the ECU....a proper base map will take care of it. So don't lose hope yet....try going to pgmfi.org and research what ECU bin file such a conversion will accept with no problems.

I did ECU tuning a while back...but as far as I remember converted P08's (or some other sohc non-vtec ECU) needed a special basemap when vtec was added to it to run correctly.