just borrowed a piper cross induction kit for my astra gsi. Some strange reaction form it. It cuts out sometimes when im comeing up to a junction and i get the occasion kangaroo in on part throttle in a high gear. I also noticed that when im in 5th and if floor the pedal there seems to be a little resistance untill the car pics up.
I have only borrowed the piper cross, would a k&n be any better or are these common problems for xe`s with induction kits on.