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Old 06-26-2008, 03:25 PM   #22 (permalink)
atvrider93
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Quote:
Originally Posted by tigmaster View Post
All have packing.
mechanical baffle pipes have no packing

Quote:
Originally Posted by wr250f95 View Post
as far as i know pipes dont alter the backpressure, they simply alter the waves heading back into the engine.
it does in 2 strokes but i'm not sure about 4s
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