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This tune is for owners who want their M3 to drive the way it should have from the factory
HPFP/LPFP pressure control
increased throttle response
525xi / 530i — M54
E9X M3 S65 MSS65 N/A Tune – Stage 1/2/3 740i This tune is for ownersLooking for a supercharger tune? If your S65 is supercharged, this is not the correct product. Supercharged setups require a dedicated calibration strategy. Please find the Supercharger Tune product to ensure proper fueling, load modeling, and engine safety. This BMW MSS65 custom ECU tune is designed specifically for the naturally aspirated S65 V8, delivering sharper throttle response, improved power delivery, and refined drivability while maintaining
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