Do Mufflers Increase Horsepower: An Expert Weighs In

Aftermarket mufflers / muffler delete do not increase horsepower by much. Muffler is too far back in the exhaust system and the reduction in backpressure is insignificant. You can only gain minor horsepower if your stock muffler is extremely restrictive. I personally tried using a muffler on my 2006 Honda…
Ifandi S.
September 1, 2021

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