Do tuners really work?

Question

There is a longer explanation for the short answer. While manufacturers of aftermarket performance products claim they can add 3-4 miles per gallon, the actual savings are dependent on where you drive. Performance products increase engine output.

Hagrid P Hazard · Accepted Answer

There is a longer explanation for the short answer. While manufacturers of aftermarket performance products claim they can add 3-4 miles per gallon, the actual savings are dependent on where you drive. Performance products increase engine output.

Do tuners really work?

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