I'm looking at a supercharged Elise (presumably VF) and it still has the stock exhaust. I've read through some older threads where there was discussion that said you needed a SC specific exhaust or the supercharger would be inefficient (backpressure, heat etc). The seller (who knows a lot about these cars) said the stock exhaust was fine and was quieter than any of the aftermarket options. I personally am not interested in a loud exhaust but I want to make sure that keeping the stock exhaust won't cause any problems down the road with longevity of any of supercharger or exhaust components. What are your thoughts?