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#1
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i have an '05 cobalt 2.2l automatic. i want an aftermarket "racing" muffler and was wondering if it will change my gas mileage. and will i feel any difference in horsepower? if so, how will it change it?
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#2
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Re: After market muffler mpg?
I doubt you will feel any difference in power by just changing the muffler... I also don't think it will change your MPG at all... If so, it will be so minimal...
__________________
-Brian
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