Pulled the stock muffler off the predator, removed the spark arrestor and then removed muffler from the "header". I ended up drilling a couple 1/4" holes or so straight into baffle then into outlet pipe maybe allowing a little more flow. Also port matched the header to muffler a little, I could see an exhaust ring where they didn't match up. May not help, but makes me feel like it does haha. It really didn't make it louder at idle or fixed rpm, but it is louder when quick revving and will pop a little, sounds kind of cool. I think I'm going to cut and just move the muffler once I get hood ready to go on.
@MFDAC may need some pointers on how you did yours.
Hopefully this will give enough extra flow to compensate for air filter and larger jet.
I also bought a new brass bushing for clutch idler, the pulley tilts sideways a little when engaged, hopefully this will line it back up.
@MFDAC may need some pointers on how you did yours.
Hopefully this will give enough extra flow to compensate for air filter and larger jet.
I also bought a new brass bushing for clutch idler, the pulley tilts sideways a little when engaged, hopefully this will line it back up.