I recently installed a pair of adjustable cam-pulleys on my GSR. Everything ran like a charm till recently, on approx 30-50% of throttle once the rev reach 4000rpm's the needle...
i heard people saying that waja original CAI is supposed to be damn good by itself already.....i still dont know how the mechanism works also....so i just changed to k&n drop in filter...so i was thinking of doing...