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Hp Gains With Bolt Ons


Beezykgt500

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I just bought a 2009 GT500,the car came with a fair amount of work done. It has a JLT CF intake,2.6" Metco Motorsports pulley kit,super Cobra Jet Oval 65mm throttle body,LT headers and FR 500 mufflers,I believe it's tuned on 93 octane. With all these modifications,what's my estimated power gain?!?!

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I just bought a 2009 GT500,the car came with a fair amount of work done. It has a JLT CF intake,2.6" Metco Motorsports pulley kit,super Cobra Jet Oval 65mm throttle body,LT headers and FR 500 mufflers,I believe it's tuned on 93 octane. With all these modifications,what's my estimated power gain?!?!

My upgrades are very similar, with the exception of I also installed a one piece aluminum driveshaft. Shelby/Whipple air intake, Ford Racing Super Cobra Jet oval throttle body, Borla exhaust, and also 2.6 pulley. I dynoed at 548 at rear wheels. 4200 feet elevation, 90 deg. Ambient, 91 octane. I'm estimating about 80-100 H.P. gain. Hope this helps.
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