someone please help, got a 90 civic hatch std model, with a 91' b18 Ls. did the mpfi and all, having a weird situation. i ran it with a 88" crx si pm6 ecu and idles poorly. then when i would disconnect the vacuum that goes to the map to the throttle body it idles perfect but then the check engine light will turn on. now i would put a 91 hf crx pm8 ecu and it will sound a lil better with the vacuum line connected but will actually idle better and run without the vac, and the check engine light wont turn on unless u shut off the car and start it back.

wut the hell is going on

thanks

 

Your pm6 or pm8 isnt made to run a b18. You should go get an ls ecu from a obd0 motor.

 

used a pr4 and nutin still the same thing. a friend of mine is running the same setup in a crx and is using a pm6 for the ls and it runs real good.

maybe something is wrong with the wiring or can it be mechanically, please ur help will be appreciated

 

this is the problem, i start my car with the map connected idles like its off timing, then i disconnect it, idles at 900 sounds like its fixed, and doesnt choke up but you can tell it still isnt right, i drive it everyday like dat, changed the map and got a pr4 on it and still acts up any ideas.

and for those who dont understand i can actually record everything sound and u can see wut i do to drive it daily