521 Exhaust - Snowmobile Forum: Your #1 Snowmobile Forum

kmhemi · 07-13-2006, 10:19 AM

If you remove the silencer / aftermuffler will it hurt the engine due to reduced backpressure?

Do the higher performance exhaust require rejetting the carb?

**smallengineguy** · 07-13-2006, 10:50 AM

If you remove the muffler, you'll burn the exhaust side of the piston. Some performance exhaust require rejetting, some don't.

kmhemi · 07-13-2006, 10:53 AM

The 521 stock exhaust will work for my application but I would not be able to use the removeable silencer. I can Only use the main pipe. So that will burn the piston right? I had better look for a different exhaust hadn't I ?
I want to make sure I get this right
Thanks again.

**smallengineguy** · 07-13-2006, 09:41 PM

The main part that comes out of the motor is the most important. If you can find a different silencer, go for it.