Stock pipe noise levels

[antistar]

Anyone know the db level on a stock pipe/muffler on a 400ex?

Thanks

[Thumpin440ex]

I think its around 90 or so..


John

[antistar]

Originally posted by Thumpin440ex
I think its around 90 or so..


John


Thanks for the info!

[finsteratv]

i saw on an exhaust shoot out that its like 93.

[Pipeless416]

i've always seen that they are rated at 86-88dbs while 100% stock. my HMFs read at about 93dbs, and they're still much louder than stock.

[honda400ex2003]

88 dBs is stock as tested in most shootouts. there is no aftermarket that will get stock levels. the q4 is 90, that will be the closest thing to stock, the rest when new are all shown in the dirt wheels shootout from a while back. my pc t-4 is around 95 dB and has quite a bark when you lay on it. i know there are quite a few over 95. it gets super loud for long distances when it rings that high. 2 strokes dissipate quicker since they are different wave length than the 4 which travels a long ways. steve

[finsteratv]

Originally posted by Pipeless416
i've always seen that they are rated at 86-88dbs while 100% stock. my HMFs read at about 93dbs, and they're still much louder than stock.
guess i shouldve looked at the paper a little more closer on the shoot out:cool:

[honda400ex2003]

that would have helped you out a bit ;) lol it shows every pipe and all of the dB levels for all of them. steve