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      01-10-2013, 12:18 PM   #11
M54ccibo's Avatar

Drives: '16 GT4
Join Date: Apr 2012
Location: Orange County, CA

iTrader: (0)

Originally Posted by Poleposition View Post
My experience is that with valves closed, it is no louder than your stock setup. With valves open, different story altogether. I wouldnt have purchased this exhaust without the valves. There is drone inside the cabin only with valves open and only between 1500 and 1900 RPM. You can cruise comfortably on highway with valves open without any drone. Valves closed, no drone at any time. For me, it's exactly what I was looking for. The power tap is not difficult if you have a shop that knows these cars. I opted for the remote control and my shop tapped the cig lighter in the trunk for power. Ive had no issues.
Thanks. This is now confirmed by two people on the board...and better aligns with what I am looking for in an aftermarket exhaust.
Current: '16 GT4
Past ///Ms:
'13 F10 M5, Alpine Weiss III/Sakhir Orange Full
'10 E60 M5, Space Gray/Black