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How much HP and TQ gains should I expect to see from long tubes?

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Old 09-10-2004 | 03:20 PM
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MBC Racing
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Default How much HP and TQ gains should I expect to see from long tubes?
I am running true duels now and want to get rid of the cats and get some long tubes. how much HP and TQ should I expect to gain over the stock manifolds?

Thanks
Brad
00Z28 11.7@118
00 Silverado Z71 on 33s
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Old 09-10-2004 | 03:22 PM
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cstchevy
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usually about 15-20 hp/tq si what I hear.
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