My car seems to try and suge forward whenever i'm at a stop acctually its more of a rocking back and fourth. Its really anoying and the damn thing will about give you whip lash. I'm not sure if its motor or tran related. The motor has had work done to it not sure what all but the guy i got the car from said it had a "BIG" cam in it. Could the loping be causing this?? I bumped up the idle right at the throttle body on the TPI to abou 1K - 1300 in drive and it helped some, its not as violent now, but the car does 30mph without touching the gas now. any help would be great