I just recently had cams, cam gears, evo 9 20g turbo, injectors, and fuel pump installed and a retune and the car drove great. All of a sudden the RPM's went up to 4k. I thought the throttle might be sticking, so I reved it. Still 4k. So I shut it off and let it sit for maybe 1 minute and started it back up and it was fine. Don't know if it will do it again but hopefully not. Has anyone had this problem before?

 

sound your car have been flash?? who flash it ?

 

I had it reflashed by Gruppe-S and Dyno tuned.

 

It may be a bad ISCV (Idle control valve) or your BISS adjustment is set high, and the ISCV can't compensate to the speed it needs.. If it can't hit the target RPM, it closes all the way, then opens all the way, this might be what your seeing..

 

your best bet is to go there or call them and explain your situation.

 

The only thing that is weird is that it just all of a sudden did that. I've been driving for about 2 weeks now and no problems then all of a sudden it did this. Hasn't came back yet so far.