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The Great 2-stroke debate : Compression vs Flow

Loony661

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That's what the second cone on a tuned pipe is for...
Exactly. Which is why it’s particularly important not to over-do a chainsaw.. My 661 has 3 exhaust ports - if I did it again, I would limit it to only 2. It’s thirsty, granted it makes a lot of power and cuts fast.
 
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