so i turbod my em1 b16a2, 50 trim at 8 psi , 550cc injectors, full exhaust with high flow cat, fuel pump, fuel rail, fuel filter, fuel pressure regulator, stage 2 clutch, 8 pound flywheel, socketed and chipped p28 ecu with an obd2 to obd1 conversion harness , customized for my upgrades. so the problem is that when the car idles the tach is bouncing from about 1000 to 1500. and it will stop if i step on the gas a little bit or move the car forward a little. when i start the car it runs fine, idles perfectly until i start driving for a couple minutes and come to a stop. the car seems to drive fine tho still boosts all the way and still pulls hard. i took off the IACV and cleaned it and that made a little bit of a difference but still having the same problem. could it have something to do with the obd1 conversion because both o2 sensors are still plugged in. any ideas?

 

dude just get the car tuned,it will make all that stuff you got work perfect

 

yea i was planning on doing that as soon as i can afford it but i wasnt sure if they would even tune the car if its not running correctly

 

i has a turbo ls and it did the same thing ,turns out it was the IAC valve

 

yea thats exactly wut i was thinkin it was but i took it out and cleaned it and everything and its still doin the same thing. did ur ls idle like that when you took it to get tuned?

 

well it did it after it was tuned.i would recomend just replacing it.sometimes cleanin them wont do the trick

 

really? all right maybe ill try that then. and get it in to get tuned as soon as affordably possible. thanks for the help

 

okay 1 trick.....
step one: take off the piping from where it coonects to the throttle body....
step two: u should have an open throttle body...
step three: put ur palm to cover the the throttle body.....
step five: if the car dies than u have to tune the car....
if the car doesn't die and still idles the u have a leak in ur gaskets...either throttle body gasket or intake magnifold gasket leak....hopefully this helps....i have that trouble before...trust me....