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With the tune loaded and the intake installed, Paul Meister spun up the rollers and recorded the ZL1's new power numbers. Horsepower and torque were up big as the ZL1 laid down 499.1 horsepower and 483.7 lb-ft of torque, a gain of 38.6 horsepower and 28.8 lb-ft of torque. An increase in boost, from 8.3-psi peak to 9.9-psi peak, proves the intake's ability to flow more than the stocker, with boost up from 3,000 rpm on. View Related Article
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