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Going from completely catless piggies to ASP DP's with cats. Any thoughts on which flow better?

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Old 01-05-2007, 07:03 AM
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Default i believe that just the cats are different. i have asp full exhaust from heads to tips with
gen 1 cats and have no complaints.
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Old 01-05-2007, 07:03 AM
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Default Not upset at all. I am going from no cats to DP's with cats, and don't know if I will lose flow
based on looking at ASP DP's vs the stock DP's, I am thinking there will be gains, even though I am going from no cats to DP's with cats.
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Old 01-05-2007, 07:04 AM
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two weeks
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Old 01-05-2007, 07:59 AM
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Run some FATS now and run some FATS when you get your DP's installed and let us know.
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Old 01-05-2007, 08:31 AM
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thats why Catless Piggies + Milltek 3" = performance with quiet sound
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Old 01-05-2007, 09:38 AM
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FYI: Gen 2 downpipes have been out for about 4years and 200cpi metallic cats for about 3 years
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Old 01-05-2007, 10:08 AM
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i know...i didn't know if he was buying new or used.
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Old 01-05-2007, 02:56 PM
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Car Craft did tests with cats/no cats on high hp motors-some had more hp with cats
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