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Originally Posted by hunter1
Does anyone know who has the best prices on an x pipe. Does adding the performance exhaust change the gas mileage. I had a Hummer before and changed out the air intake and exhaust and that increased the mileage about 2-3miles/gallon.(also made the truck sound just mean!!)
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Yeah it might change the gas mileage some.. but barely if any..It also obviously depends on how you drive the car...Common knowledge is getting an intake and a better free flowing exhaust will improve the mileage a tiny bit. But again, it depends on how you drive her. Most people getting performance upgrades aren't doing it for the gas mileage..
