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RENNtech Porsche 997 Carrera (3.6L DFI) ECU Upgrade. Up to 365HP and 300TQ.
Gains: +20HP & +12TQ
RENNtech Porsche 997 Carrera S (3.8L DFI) ECU Upgrade. Up to 396HP and 320TQ.
Gains: +11HP & +10TQ