What kind of gain do you think the 3.1 will get with headers, cat back exhaust, u Bend delete, 2.5 inch DP with high flow cat, intake, and some sort of cold air intake starting with 175 HP like on my 3.1?Originally Posted by bluegtp91
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08-08-2011
What kind of gain do you think the 3.1 will get with headers, cat back exhaust, u Bend delete, 2.5 inch DP with high flow cat, intake, and some sort of cold air intake starting with 175 HP like on my 3.1?
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