ZC runnin rich?

[CompFX]

I did a zc swap into my 91 rex si.. Got it runnin (no problem there).. Its runnin real rich (big problem gettin lightheaded at redlights).. Found a vacuum leak (fixed that problem).. Now its really bad inside the car(get lightheaded drivin) my question is after the swap i had the vacuum leak, Did the ecu set the air/fuel mix with the vacuum leak making it heavy on the fuel? If so how do i fix it (reprogram the ecu w/o a vacuum leak)..


Humor me im feelin a little retarded right now still buzzed from the drive home...

 

[cheese9988]

Its a common thing with zc's appartently...is it throwing any codes? Mine was running real rich until I fixed the tps sensor, I fixed that and it still runs slightly rich. It has a pm7 ecu made for the motor too.

 

[CompFX]

Its not throwin any codes but it is loading up at idle

 

[cheese9988]

Loading up? meaning the idle is high? When mine is cold it starts up around 2000rpm and then when it warms up it drops to around 1000rpm.

 

[CompFX]

Loading up=to much fuel not enough air.. My idle stays around 900(after it warms up) but when i stop or when it winds down from a high rev it stumbles a little (loads up with fuel) sputters then idles fine but still rich..

 

[cheese9988]

Did you replace the o2 sensor, I got a universal from autozone <$30.

 

[CompFX]

Ya replaced 0/2 , plugs , cap , wires using si intake ,injectors and dizzy..CAI,Header,high flow cat,aftermarket catback..

 

[cheese9988]

Dunno, mine still runs a little rich but not as bad as before. Before you could smell the fuel, now I can't. I'm running stock zc, stock intake, stock zc manifold, downpipe, bored out cat, new si exauhst front to back, new plugs, new o2 sensor, new tps sensor, pm7 ecu, new cap/rotor. I like the stock look of the car, thats why I bought it, so I am trying to keep everything the same. Basically I am just rebuilding it.

 

[CompFX]

Koo not anything wrong with the stock look..Mine is all stock exterior stock height stock wheels,been wrecked and fixed so right now it is multi colored.. I like it that way almost a sleeper look except the melon shooter hangin out the back of it...

 

[cheese9988]

I ended up repainting mine, paints expensive....until you get a quote from a body shop.

 

[CompFX]

I got it only took a lil research..