Quote:
Originally Posted by reesmicm
One thing promoted on the Borla system is that there is a +4-6 HP/TQ increase at 4700RPM instead of all these other exhaust systems that promote their gains at 7000RPM.
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I love my Perrin exhaust, but it definitely won't gain 4-6 hp or tq at 4700 rpm. According to the DSport dyno, it averaged just 1.1 hp more than stock between 4500-5000 rpm. All significant gains were from 6500-7400 rpm.
http://imageshack.us/f/5/028we.jpg/
You might be better off going with Borla if those factory claimed gains are true.