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Discussion Starter #1
Can we swap the stock muffler and install a yoshimura motorcycle muffler instead. Less restriction ! with a great sound.
 

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Why install a muffler at all?
:twisted:

I wonder how loud our little 1L engines are on their own...
 

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Yes, good question. Since
a) the exhaust manifold already has the 3 cylinder combined into one
b) the exhaust tube being very small
c) having two separate catalytic converter

That is enough for restriction and noise canceling. But it should make a drop in MPG. I think it will affect the ways the ECM computes the gas/air mix and will decrease the MPG
But you might gain some HP and torque


I think that as long as the new muffler holds well and air tight, you are OK. But is it all stainless. Your Insight is. And it is a nice feature.
 
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