I just replaced the stock exhaust on my 01 VFR with a slip on FMF pipe. Sounds great. Just wondering if I now have to take it in to the shop to get anything done to the engine? I don't want to blow a piston or anything. Thanks!!!
No mods are a necessity for just a slip-on for your bike. Since you have O2 sensors, your FI will compensate slightly for your new exhaust after being ridden 10-15 miles.