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Old 06-18-2001, 06:44 PM   #1
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Best flowing 3" cat
Which 3" cat, w/o AIR, will make the most power on a modded TPI motor? It will be sandwiched between SLP 1.75" headers and a SLP 2OTL cat back.

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Old 06-19-2001, 12:02 AM   #2
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Anyone???

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Old 06-19-2001, 02:18 AM   #3
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I hear catco is pretty good
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Old 06-19-2001, 02:37 AM   #4
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NONE!
Actually I heard that it is good to have a cat in tpi engines because they need back pressure is that right
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Old 06-19-2001, 09:54 AM   #5
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Catco are a cheap replacement. Although not the worse quality, i don't think that they are the best. They are stainless which is cool. I hear that Random Technologies have the best cat.. a little pricey though.
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Old 06-19-2001, 04:27 PM   #6
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Random technology cats are best, but you are going to pay for it. They cost around $200-250, but flow almost equal to a strait pipe.
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Old 06-20-2001, 04:58 PM   #7
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I have a 3" dynomax and I felt no difference between that and a straight pipe.

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Old 06-20-2001, 04:58 PM
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Reload this Page Best flowing 3" cat
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