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i have an e-cutout. gained about 12 hp to the wheels with it open. track results? negligible. i use it mostly because my stock over axle/magnaflow muffler is pretty damn quiet, then i can open it and be super obnoxious haha.
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00 T/A NBM
04 Silverado SS - Sold 
00 Trans Am WS6 NBM - Sold
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