one of my friends has a 97 z28 a4 and he just recently installed power and amp series pullies. after the install his car is running really ****ty at high rpms. and i have had to replace my opti he said it does not feel like my car did when it was missing. his feels like he is at WOT and then lets off for a split second and then back to WOT. anyone heard of anything like this?

 

He left the damper on correct? If not tell him not to move it an inch!!!!

 

1. make sure the stock pulley/balancer is bolted on to the outside of the underdrive crank pulley.

jesse