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      07-31-2018, 03:18 AM   #4
Asbjorn
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Drives: Z4 N54 DCT (VTT GC lites)
Join Date: Mar 2012
Location: European in China

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Secondary cat delete is not raspy with stock mufflers, and also adds a bit of horsepower.
I now run secondary cat delete and race catted downpipes with gc lites. It is significantly louder, and the step up in sound volume was larger than that of secondary cat delete compared to stock.
Appreciate 0