hondahater4ever
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- May 14, 2017
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Most people on other forums say they went down 2-2.2 MPG after adding mufflers, so I am not too bad compared to every one else I have read. After removing all this crap and tuning I seen no improvement in MPG, stock I was getting 16 MPG and when it was straight piped exhaust 15.4 and now with mufflers 14.1. I hated the stupid noise this Powerstroke made, I am really beginning to wish I would have bought the Cummins instead.
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