I made Canadian Dave's Pipe Modification (removing the silencing material and screen) and saw a GREAT Improvement in torque and overall horse power with little difference in noise. I have heard with this modification the stock pipe performs like a FMF Pipe. Has anyone tried the pipe modification mentioned and also tried a FMF Pipe. I would like to see a graph of torque/horsepower comparing the two types.
Stan_Flemmings the mod only works on 89 to 94 pipes.
mlhend1 I’ve used a modified pipe and used a bike with an FMF pipe. The two are very comparable with the modified pipe having a little more bottom to mid grunt imo. The 89 to 94 FMF pipe is a moto pipe intended to improve power everywhere rather than focus an improvement on the bottom-mid like a torque pipe or mid-upper like a rev pipe.