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Maybe on stock turbos, no, but with upgraded turbos YES. If you could compare side by side a set of stockers and a set of nicely ported stockers you would be surprised just how much restriction there is. I don't have any concrete evidence of it but many would agree there are gains and the time spent to do it is worth it. But I agree that Greg's manifolds are probably be far superior in performance over stock ported. Which again points to how restrictive the stockers are.
Last dyno: 478 whp 435 lbs-tq On 94 octane @ 17psi Best 1/4 mi: 12.59 & 120mph on old steet tires Daily driver, 05 Titan KingCab Tow package, 2.5" lift kit. Looking for used trailer to tow Z to the tracks and back. |
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