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Old 03-05-2012, 09:00 AM   #5
n116ebo
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Drives: 2010 2SS YELLOW TRANSFORMER AUTO
Join Date: Mar 2010
Location: SAN ANGELO TX
Posts: 632
I have the borla s axleback on my l99. It is a great improvement in sound and weight over the oem mufflers. The only thing I do not like is when the afm (4 cylinder) kicks in it sound like a 4 cylinder. You have to run with tap shift or do a tune to get rid of afm to get around the 4 cylinder sound. Hope this helps. Right now I am using the pistol grip tap shift shifter to keep from hearing the afm sound.
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