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      02-04-2013, 06:15 PM   #9
mkPOTO
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Drives: 2002 Lexus GS300
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Originally Posted by dmk08 View Post
Awesome. Does anyone know if there is any drastic HP difference in a tune + high flow cat x-pipe vs tune + no cat x-pipe?

Thanks.
I have the full evolve unit and made about 380whp, stock was like 35xwhp. I wish I had a dyno of my challenge race x-pipe.
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