Dinan D900-S63-T4-S1-W is Dinan+ performance engine software for BMW S63 TU4 applications including F90, F91, F92, F93, F95, and F96. Dinan states that the calibration is designed to increase power and torque on pump gasoline without catalyst modifications and includes factory-matching 4-year/50,000-mile warranty coverage. Dinan's published testing shows maximum gains approaching +115 WHP and +160 lb-ft of torque on pump gas. The current manufacturer listing carries emission code 7 and is not legal for sale or use in California while applicable CARB testing is pending.

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