alexis.jones
New member
Hi all, so I installed an aftermarket valved exhaust on my 991.1 C2S and hooked the original vacuum lines from the standard exhaust. All was good with the valves operating via the DME for a few months but now they are no operating the and exhaust is always on loud mode (valves open) The coolant warning did get thrown up but then disappeared once I replaced the exhaust COV, still nothing. When I checked the lead that powers that COV its not reading any voltage at all. Anyone have any ideas please? I have tried to search the issues but I cant find anything. Thank you