How much do aftermarkets affect gas mileage? - aftermarkets for shingles
03 I have a Z71 with a 5.3L engine and I thought, hmm. Gas mileage is not so great. How much would a cold air intake, exhaust and programmer to improve my mileage too? Could it be that worth the money spent?
Monday, December 7, 2009
Aftermarkets For Shingles How Much Do Aftermarkets Affect Gas Mileage?
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