I'm not sure about a break-in period for the carbon pipes but I just had a C-4 Aluminum pipe put on my F4 and it sounds great. There also seemed to be a significant increase in throttle response and low to middle snap.Is there supposed to be a difference in the sound from a fiber pipe? I thought that people just bought them because they liked the way they looked.
_________________________
Keep it on one wheel.
------------------
_________________________
Keep it on one wheel.
------------------