quiet please (another exhaust system post)
Posted June 04, 2002 - 09:14 PM
Posted June 04, 2002 - 12:07 PM
I never put my FMF Q on a meter, but I parked my Q-equipped YZ next to a stock 520EXC and it was just as quiet at idle but a bit louder under a load, especially as the revs climed.
I would think that whether or not the Q is below 94 db would depend entirely on the nature of the test (distance of the meter and rpms of the motor). As popular as the YZ/WR is I would think you could call the organizers and ask what pipe will allow your bike to pass.
Finally, please don't take my opinion as any sort of endorsement on my part of the FMF Q pipe, which is IMO the biggest pile of overpriced, overhyped junk I have ever attempted to put on my bike. I think it represents a bad design put to shoddy manufacture and sold via questionable performance claims (it kills the top end, but claims to add 1 hp).
That wouldn't be so bad, happens all the time, but in my case the damn thing fell apart. I didn't believe the power increase hype, I just wanted a quiet pipe, and it was, but it is poorly thought out and its length and weight are not sturdily supported, and it fell apart after about 20 hours of use.
Hope this helps.
Posted June 04, 2002 - 04:24 PM
Posted June 04, 2002 - 07:10 PM
Posted June 05, 2002 - 12:22 PM
I have a White Bros E-Series/Hawkins Quite and an FMF Power Bomb SX head pipe. Seat-o-the-pants-o-meter says there is very little performance difference from the uncorked stock WR system, but I tend to be more of a lugger than a screamer. I have never been sound checked, but mine seems a little quieter than my buddy's '99 with the stock exhaust. I doubt my system would pass at 94db unless I started taking out discs, which would probably reduce performance.
I believe the little chamber on the FMF Power Bomb acts like a resonator and helps to reduce the sound output.
I originally bought the FMF Q can. But I returned it without ever running it because the fit was so bad.