Posted August 06, 2006 - 05:08 PM
Posted August 06, 2006 - 09:08 PM
i'm looking for performance, without too much noise. a friend of mine has a fmf ti pipe on his wr400, and that bike goes way better than my 426! is that same pipe compatible with the 426? fmfs site doesn't say anything about it.
I have an fmf factory 4 pipe. I just put the quiet insert into it and I can actually hear myself think now. It is SIGNIFICANTLY quieter.
It does sputter a bit at max throttle. I am going to go a little leaner of my main jet and raise my needle a clip.
Posted August 07, 2006 - 06:55 AM
Do you notice much of a power drop with the insert installed?
Not really. I'm no expert (intermediate rider), but I would say that the low end is still there. Absolutely nothing is missing that I can tell. The mid range is still very good, but I have the sputtering as the rpms get higher and I get really agressive. But that's rare for me (see my other posts about broken wrists and feet!)
I am going to play with the jetting a little. However, I cannot really feel the bike is less powerful.
I am in intermediate rider, I like single tracks, desert trails and hills. According to my TrailTech, I averaged 23mph on my last ride, and that was the trails at Gorman. I do not think anything is missing, but then again, I might never know it because I don't usually go that fast with my type of riding. Its still very fast and powerful.
At any rate, the insert was only $40 bucks and is worth a try. If you have an FMF pipe, be sure to get their quiet packing to go along with it. I have no doubt that I am legal now.