Useless Muffler Statistics
Posted January 31, 2002 - 04:43 PM
Here's some useless statistics for those who are interested:
<ul type="square">[*]Stock muffler with baffle weighs 8-1/2 pounds [*]FMF Megamax II with quiet core, freshly packed weighs 6-1/4 pounds
Noise level measurements:
Stock muffler, baffle in
<ul type="square">[*]Idle: 81 dBA [*]1/2 to 3/4 throttle: 92 dBA
Stock muffler, baffle out
<ul type="square">[*]Idle: 91 dBA [*]1/2 to 3/4 throttle: 110 dBA
FMF Megamax II, 8 disks, quiet core in
<ul type="square">[*]Idle: 86 dBA [*]1/2 to 3/4 throttle: 94 dBA
All sound level measurements were taken with a sound level meter set at A-weighting, slow response, and was positioned 20 inches away from the exhaust outlet at a 45° angle.
This was my first ride with the stock baffle in- I was amazed at how quiet it was and the power wasn't too bad. You can really hear the engine noise with the exhaust that quiet. I'll use it when I'm at an event where sound levels are an issue. (Leaner jetting may help with the power there.) Otherwise, the FMF muffler will stay as my first choice because even with the quiet core removed, it's quieter than the stock muffler without the baffle. (I didn't measure the sound level without the FMF quiet core because it was getting dark and I didn't want to piss the neighbors off, but it's definitely quieter.)
Posted January 31, 2002 - 05:06 PM
Not useless but definitely "USEFULL" stats
anyone have same kind of number for stock YZ silencer?
thanks for posting these
Posted January 31, 2002 - 06:53 PM
I too would like stock YZ info..
Posted February 01, 2002 - 04:06 AM
Posted February 01, 2002 - 09:12 AM
Posted February 01, 2002 - 10:14 PM
Posted February 02, 2002 - 04:44 PM
<ul type="square">[*]Idle: 94 dBA[*]1/2 to 3/4 throttle: 106 dBA
Posted February 03, 2002 - 06:34 AM
I believe the new Calif. regs. top allowed is 102db?..Can anybody answer that?