1989 Pontiac Trans Am GTA - Third Bird Heard
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Dyno Testing - The dyno chart reveals the baseline pull produced 180 rwhp and 245 lb-ft of torque. After the exhaust was installed, the first pulls revealed that the engine was running lean: The result was 194 rwhp and 231 lb-ft torque. Though peak power was up by 14, peak torque dropped 14 lb-ft from the baseline. Adjusting the fuel regulator for higher pressure resulted in 195 rwhp and 257 lb-ft torque, an increase of 15 rwhp and 12 lb-ft of torque over baseline. View Related Article
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