Originally Posted by Indpowr
Sounds like my Vette.
This might help
Borla sells 2 versions I assume this is the S.
Yup, but I think the vette's quad configuration is a tad DEEPER.
Major resonance's for the A6 guys, but for some reason the M6 is better able to avoid the "drone" between 15oo and 1600 RPM's.