RENNtech Porsche ECU Upgrade 997 GT3 (435 HP / 314 LB-FT) porsche-911--997-2---2009-2013--gt2-rs-esr5059610 0L Inline-4 Turbo) Stock Performance

RENNtech Porsche ECU Upgrade 997 GT3 (435 HP / 314 LB-FT) porsche-911--997-2---2009-2013--gt2-rs-esr5059610 0L Inline-4 Turbo) Stock PerformanceRENNtech Porsche ECU Upgrade 997 GT3. Up to 435HP and 314TQ. Gains: +20HP & 15TQ Our proprietary Porsche ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary tuning software and

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