Ok guys, heres a stunner.

I have a 1993 Infiniti G20 with the mods listed below. Well, in the morning, when I fire her up (cold), car jumps to 2500RPM stays there..then comes back down and won't idle (i was told it was because of the cams)...once I rev it just a TAP (and I mean just a tap) I can get her to hold idle at around 800RPM. As she warms up idle sways to 1500RPM once every 3 mins and comes back down to 800RPM.

If I drive the car...and push the clutch and come to a light..idle rises to between 1800RPM and 2200RPM..after it hits 2200RPM it bounces down to 1800RPM and slowly comes back up. If I tap the brakes a few times, idle comes to 1100RPM and stays there.

If I tape the brakes even more car comes down to 800RPM.

I just regrounded my MAF sensor and that helped a little bit. The screw is ALL THE WAY DOWN on my IAC motor.

What the hell could possibly be wrong? I am to my wits end. Please help :( TIA.

Tony
1993 Infiniti G20
SR20DET, JUN Cams, 2.5" JGY Downpipe, 2.5" Cat-Back, XBC Boost Controller, Battery Relocation, TurboXS Type H BOV
Walbro Fuel Pump

Is your BOV routed back to the intake after the MAF ?? Swap the Idle air control valve with the stock one ? Did you use the US Coolant temp sensor ?? ... Only things that could come to mind ???

Is your BOV routed back to the intake after the MAF ?? Swap the Idle air control valve with the stock one ? Did you use the US Coolant temp sensor ?? ... Only things that could come to mind ???

I doubt his BOV is rerouted since to my knowledge the Turbo XS don't have the reroutyness (sp?), anyway that may be your problem but I disconnect mine sometimes and it won't idle but when I tap the gas how you said it will idle, but it won't jump to 3000 like yours does, i think your BOV might be only PART of your problem, I think there's something else...just my $.02

Anyone feel free to correct me if I'm wrong..