Yeah, it's a bit of a shitter, especially as ACS is an approved BMW tuner & it made no difference to the BMW AUC warranty but as the guy said its a different underwriter for extended & although the exhaust wouldn't have anything to do with, for example a panroof failure the non 'approved' exhaust would be on the work sheet & the warranty company could refuse the claim, especially if it were an expensive one & insurance companies being what they are I suspect they would even if it is unrelated & if it were to have anything drive chain or suspension they'd definitely put it down to the 'additional' power provided by a 'non approved' exhaust system...Well..fuk em, I wanna add it ain't gonna go expensively wrong...but it's Friday 13th
