By reprogramming the ECU, we were able to increase power for the BMW X5/X6 50i by an astounding 80hp & 66lbs tq (over stock). No physical alterations were made ie. Intake exhaust, headers, etc. Once the vehicle is reprogrammed, power is widely available throughout the rpm band, hesitation and flat spots are smoothed out, and speed limiter is removed.

BMW X5/X6 35i: 65hp & 83lbs tq (Please contact for more details)


Please inquire about other BMW models.

Please contact the sales department for any questions or concerns.

Please obey all traffic laws. ECU Tuning Group does no encourage speeding.