My GTO at Proxses Tuning, 15 May 2011. TVS 1900 with a 3.0" pulley, GM LS9 ZR1 cam, PRC dual valve springs, Comp push rods, Kooks 1 3/4" catted longtube headers, Duspeed OTR intake with LS3 MAF, NGK TR6 spark plugs, MSD wires, Magnaflow x-pipe and Magnapack mufflers. More than pleased with the numbers! Dyno numbers on the screen were uncorrected and the torque values were obviously wrong at first. Final numbers were 539.1rwhp/521.2rwtq SAE corrected. Sorry for the squeaking idler pulley, I just picked up a new one today.
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