Exhaust pop when shifting
My car is an 02 WS6 M6 with 112k on it. It also has an Borla exhaust that was installed by a previous owner. The car will make a pop noise on decel when I go to shift. It's more noticeable the higher the rpm's when I shift and is louder when the car is cold. I have already replaced the plugs with NGK TR55's and MSD wires. I have no idea if the cats have been touched or not and I believe the stock exhaust manifolds are still on the car. I'm assuming this is just some unburnt fuel working it's way out and that it's not a big deal but just wanted to make sure.
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