Thread: GTM Performance Engineering: MHI Twin Turbo Official Release
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Old 04-03-2013, 08:13 PM   #186 (permalink)
mfeinst
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Originally Posted by Dzel View Post
Is a 3"exhaust absolutely need? Other miss have put out 550+ with stock cats and a 2.5" cbe?
Stock cats limits to about 450whp. Test pipes make a flatter torque curve and give you a little more power. Straight through 2.5 can get you up to 550.
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