I have a 2004 Chevy Silverado Z 71 4 x 4 I am looking to change my muffler for my stock off work to a Flowmaster super 10 and looking to keep my gas mileage up what should I do
Just keep your foot out of the gas when you get it put on.
I agree 100℅
I kinda figured that much but didn't know if there was anything else I could do
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