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Old Nov 2, 2006 | 10:43 PM
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Would it be pointless to get LG Street Series Headers with cats that tie into my current exhaust system?
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Old Nov 2, 2006 | 11:08 PM
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do you have stock manifolds is the question.
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Old Nov 2, 2006 | 11:53 PM
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Originally Posted by Ell Ess Won
do you have stock manifolds is the question.
Yup it's 100% stock performance wise.
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Old Nov 3, 2006 | 09:56 AM
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I've got the LG Street Series + cats in a box over here, I am not sure how much the cats will detract from the hp gain.
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Old Nov 3, 2006 | 12:15 PM
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Originally Posted by Pro Stock John
I've got the LG Street Series + cats in a box over here, I am not sure how much the cats will detract from the hp gain.
I have the LG Pros and I dynoed with and without cats on back to back runs... The difference was less than 3 rwhp and tq...


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Old Nov 3, 2006 | 01:31 PM
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Originally Posted by SideStep
I have the LG Pros and I dynoed with and without cats on back to back runs... The difference was less than 3 rwhp and tq...


The generally accepted wisdom in "Z" land is that the cats don't take much out of the power and the stock TI exhaust flows virtually as well as any aftermarket system. I'm planning on doing ARS headers and an X pipe this winter and I will be keeping the stock cats.
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