Modifying Stock Exhauzt
#1
Modifying Stock Exhauzt
Can you gain more HP by removing the baffle out of your stock exhaust pipe on an 06 YFZ 450.. I also want to know if you there is anything specific you can do to modify your stock pipe to get a little more hp out of the bike....
And does my 450 have to have any kind of back pressure and the reason i ask is if i remove the baffle will it hurt the engine...
And does my 450 have to have any kind of back pressure and the reason i ask is if i remove the baffle will it hurt the engine...
#2
#4
Modifying Stock Exhauzt
Loss of backpressure is not a problem, but you will likely have to rejet to conpensate. My NMotion is pretty much a straight through design, little to no back pressure.
As far as modifying your stock pipe, you can either use the "hole saw" method and cut a circle out of the baffle in the pipe, or cut about 6" out of the center of it and turn it into a shorty. I started the shorty method after I got my NMotion, but never got around to finishing it.
from the process:
The way I had it set up, I would use the rear mounting flange on the muffler to bolt onto the front location on the frame, and after cutting the center out, the new welnd would be "on top" of the original weld to give it a somewhat clean look.
As far as modifying your stock pipe, you can either use the "hole saw" method and cut a circle out of the baffle in the pipe, or cut about 6" out of the center of it and turn it into a shorty. I started the shorty method after I got my NMotion, but never got around to finishing it.
from the process:
The way I had it set up, I would use the rear mounting flange on the muffler to bolt onto the front location on the frame, and after cutting the center out, the new welnd would be "on top" of the original weld to give it a somewhat clean look.
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