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Motofool · March 25th, 2017, 07:59 AM

The engine should exhaust thru the original resonating pipe in order to perform per specs.
The downstream canister is just an absorbing material silencer, which needs to be repacked from time to time.

https://en.m.wikipedia.org/wiki/Expansion_chamber

I would remove any wrapping, because that changes the dynamic inside the resonating pipe, due to reduced cooling of the expanding gases.

March 25th, 2017, 07:59 AM	#17
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	The engine should exhaust thru the original resonating pipe in order to perform per specs. The downstream canister is just an absorbing material silencer, which needs to be repacked from time to time. https://en.m.wikipedia.org/wiki/Expansion_chamber I would remove any wrapping, because that changes the dynamic inside the resonating pipe, due to reduced cooling of the expanding gases. __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí
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