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Went ahead and dynoed the car today!! Making the car stick to intended gear was a bit tricky, but managed to dyno the car in 5th gear without it downshifting after throttle is applied. Here we go.
Reason for the dyno is to have a baseline to compare with after installing the invidia exhaust system!
109 degrees F and the fact that their spec is detuned to 322hp. 20% loss would have them at 257hp, so I'd say given conditions, it was better than I'd have expected.
Oh, well excuse my ignorance. I thought 460's had 342hp. And 20% of 342 is 274. Correct me please if im wrong.
US Spec GS460 = 342hp, Middle Eastern Spec = 322hp. 20% loss on the 322hp puts them at just under 260 which is in line with both members from the M.E. No one has received a good answer as to why theirs are detuned.