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Old 02-11-2011, 03:48 PM
KevinM KevinM is offline
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Join Date: Feb 2006
Location: Naples, FL
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Blitz,

Your motor probably makes around 750 HP on an engine dyno with open headers. The sidepipes on these things are actually very inefficient in spite of how loud they are.

There have been a number of members here who have dynoed their high horsepower cars with and without the sidepipe mufflers. The usual power loss from the mufflers is in the 100 to 150 HP range.

Kevin