spintechs flow pretty bad....dyno results over on ls1tech say 17hp loss over a cut out on a 2001 camaro..... gmmg magnaflow dynomax ect flow much better
flowmaster flows like ****
spintech isnt great but not horrible either but sounds nice
sweet thunder is decent and sounds awsome but 125 a muffler
i cant say this stuff from experiance but i've really been doin my research on ls1.com ls1tech.com ect as im looking to do an exhaust system on my t/a soon
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2002 Trans am ws6.. black on black bolt ons with a JS built trans, 3200 stall,TTM's w/315's, full umi adj rear suspension, strano springs/sways, and koni 4/4's
2015 Forester XT touring... STI Sway bars
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