SHO Surges?

[SHOguy 92]

I don't know how else to explain it really. One day I got on it a little and it like "surged" the rpms went down a few hundred rpm's then it was fine. Didn't do it anymore, did it once the next day. Now it's sometimes happening more common and sometimes not. The rpm's drop a few hundred and it like "bucks". When I got on it with some friends in the car it did it and it like shook the car? I don't knwo what it is and I really can't find anything on SHOtimes except clean something, but I'm highly doubting it's the same kinda of surging.

 

[Red Baron]

The CID perhaps...

 

[BlackOnBlackATX]

it *could* be the CID but i know i have seen alot of cases where this exact symptom turned out to be the IAB valve (Idle Air Bypass). it's the cylinder looking thingy bolted right to the backside of the throttle body. try cleaning it with some spray and see if that helps you out at all. let us know how it goes.