4G63 Engine Power Options, Part 6 - To Infinity And Beyond!
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With a ported and fortified head in place, the 4G63 pounded out 417.3 whp with the Garrett T3/T4 combo and no nitrous (dyno 1). Adding the GT3040 full ball bearing turbo netted 428.2 whp at 19 psi (dyno 2). The Nitrous Express intercooler sprayer system produced a 9.6-hp gain, pushing peak power to 437.8 (dyno 3). The cause of the power gain? Boost pressure jumped to 21 psi because of the increased density of the charge air. View Related Article
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