White Brothers R4 Pipes
Posted October 12, 2001 - 02:05 AM
Posted October 13, 2001 - 12:11 AM
Posted October 14, 2001 - 12:00 AM
Posted October 15, 2001 - 09:20 PM
Don't get me wrong, the Powercore IV is a lound pipe, but it isn't ear shattering. There is a Powercore IV Q, and that is a quieter version, but not sure how the performance goes. Have a look at their page at www.fmfracing.com.
I re-fitted the spark arrestor in the R4, and that helped to reduce some of the 'bark', and it did increase the performance of the pipe (no joke). This combined with a 175 main jet has taken the pipe to a slightly better power output compared to the FMF (top end, low and mid are about the same). However, the powercore gave the bike a much sweeter exhaust note. It sounds loud and sharp, whereas the R4 barks like a pitbull with rabies.
So, the R4 is constructed and engineered better than the FMF, but doesn't sound that great. The power out put seems to be slightly better than the FMF, but not by very much. They are about the same price, so thats not an issue.
If i could go back, i would get the FMF. I miss that sweet, sweet sound! I'll buy another when i buy a new bike, whenever that is.