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Florida400EX
03-24-2004, 08:08 PM
what is the best way to make the 400EX as quiet as possible without killing performance or reliability? FMF Q? Give me some ideas, cause I need to keep it QUIET!

Knips178
03-24-2004, 08:20 PM
Take off the muffler and pack the end of the header with shop towels! It's so quiet it doesn't even sound like it's running!
:)

duneittilludie
03-24-2004, 08:37 PM
If you are wanting to still see a gain while remaining fairly quiet then the fmf q with the power bomb header is a good way to go. My wife uses the q and the power bomb on her 440 and it is very quick especially on the low end and midrange.We have had the wifes q tested on the dunes by the forest service and it came in at a quiet ( 90 decibels).

Rebel7
03-24-2004, 08:41 PM
I heard that the yoshimura with quiet tech end piece is at only 93 decibels and the stock Raptor is at 92 decibels is that true and also how much power do you get?

speedy400
03-25-2004, 08:52 AM
maybe that secondary muffler for hunting that was is dirtwheels all the time.-darren

Out_Sider
03-25-2004, 02:05 PM
that stealth thing? its suppose to be like around 75 dbs or somin, and not suppose to lose anypower.

Florida400EX
03-25-2004, 02:44 PM
Will the FMF Q with the powerbomb header be quieter than stock? I don't want that secondary muffler, its too big and bulky.

Florida400EX
03-25-2004, 06:37 PM
bump!