Hi,
Hoping someone here can help me out. My car is a supercharged 04 GTP that recently got a xp cam installed from zzperformance, It was a package with 105 lb springs, comp cams push rods, retainers, viton valve seals. I have been driving the car as set up for about 3 months and it was running good. A couple weeks ago when going full throttle it felt like the car lost power and it made a fast kind of fast flapping noise at right about 5600 rpm. I let off as soon as I heard and repeated it a couple times. There are no other noises and otherwise the car runs really good. I have not been driving it and was going to take off the valve covers to and see if anything looked like a problem. Last night when I was at Atco a guy told me about this forum, so I thought I would post here and see if anyone had ideas?
