BMW F-Series 640D ECU Remap
BMW F-Series 640D (2015) - Developed 308 to 387 bhp with torque 465 to 570 Lbft. A returning customer, realistic and well aware of the gains available from Electronic Engine Software Enhancements that Celtic Tuning offer - delivering excellent gains for the Twin Turbo 6 Cylinder Engine from their development (Sport Display scales adjusted [...]