Does an axle back have the same problems as a cat back?
most cat backs cause afm and drone problems for the l99... the best at hiding this is corsa and possibly the upcoming MBRP. However do you still run into afm and drone problems with an axle back? Ex, if i just left all the stock piping and added SLP Loudmouth II would i have afm/drone problems? or would it be the same as adding corsa?
Last edited by G.E.; 09-14-2009 at 04:28 PM.
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