Check your spark plugs and spark plug wires. If any of those are bad that will affect your mileage.
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03-31-2011
Check your spark plugs and spark plug wires. If any of those are bad that will affect your mileage.
OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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