100% agree with Herc. The old philosophy of "cat is very restrictive" no longer applies with newer cars. If there is still any doubt, check out the dyno runs done by Thrasher in their exhaust backpressure study.
http://www.thrashercharged.com/tech_htm/exhaust.shtm.
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GenV GTP engine, 12" Brakes, CAI, 3" DP, HighFlo Cat, 180 T-Stat, Aeroforce Gauge, Front STB, Stinger Fiberglass hood, Reflective Graphics.
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