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Old 03-28-2007 | 04:55 AM
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countryshooter
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From: Clarksburg, NJ
Default RE: Nitro models pusher Bobcat?

Is the pitts muffler the right size for the engine? try the stock muffler and see if that helps. had the same problem when I tried a pitts style. think it had too much back pressure on the engine.