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Just got my 2014 cts v and was looking at the corsa sport axle back exhaust. Does changing just the exhaust require the car to be tuned?
Todd nailed it. I'm coming from an Evo so just use to the terminology.Yes, because if you modify your car with say headers or pulleys you need to mod the computer program that runs your motor. If not, you will see you check engine light quickly. Most tuners change both engine and transmission programs