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Old 01-22-2015, 03:08 PM
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just wondering, my duals run off the headers all the way out the rear with no x or h pipe. what will I gain with one of those (x or h) pipes. thanks
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Old 01-22-2015, 04:09 PM
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hard to say maybe 5 hp? Maybe 20? Depends on what mods you have and how restrictive the exhaust. why dont you list all your mods so we can maybe help better
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Old 01-22-2015, 05:49 PM
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Originally Posted by redbird555
hard to say maybe 5 hp? Maybe 20? Depends on what mods you have and how restrictive the exhaust. why dont you list all your mods so we can maybe help better
ok its a 2001 4.8 with 862 heads shorty headers into 2.25 pipes flow master mufflers vic jr intake street deamon carb 625 cfm gm hot cam 228-236 525 lift and its in a 1974 mgb weighing in a 2300 lbs
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