i have a question bout y after installing a skunk2 intake manifold on my friends gsr and its not runing properly it keeps on reving up and down like to 4 grand then back down and keeps on just doing that and all is pluged in right but there is a plug where some one must of have broke when taking the sensor off someone broke the oil pressure sensor so is that the reason please some one help me on this.thanks

 

spray brake cleaner around where the intake attaches to the head you probably got a leaking intake manifold gasket. the revving up and down is the IACV trying to compensate for the overly large air going in the engine and opening and closing trying to compensate.

 

I HAD SAME ISSUES ON MY GSR I WILL POST BACK ON WHAT I DID I DON'T REMBER

 

ight ill be waiting for ur response then

 

You definately have an intake leak somewhere, make sure you hooked up all of the vacuum lines and stuff to the proper places, if you dont have an overly loud exhaust on the car, you should be able to hear where the air leak is sucking from.
another method would be to put your hand over the throttle opening and listen, it should calm down the wild revving.

 

Vacuum leak? I knocked a vacuum hose off by accident and my idle was all kinds of funky

 

ok i re hooked them up and now no more ups and down reving but it juist revs up to 3800 then stays there then when u try to give em a lil gas it just bogs and cant go any higher and can that be because of the knock sensor