DINANTRONICS Performance Tuner Stage 1 for BMW F25 X4 xDrive35i and X4 M40i (EWG)



SKU: D440-1639X-ST1

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Valid through August 26, 2022.

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DINANTRONICS™ Performance Tuner is a highly engineered and sophisticated piece of computer hardware and software that enhances engine performance, without ineffectively or invalidate your new car warranty coverage and without affecting long term reliability or the functionality of on-board diagnostic systems. It is also the only tuning device emissions legal in all 50 states. The objective of developing this piece of technology was to provide the ability to control every signal entering and exiting the BMW factory Engine Control Unit. These items are unique to Dinan and together they embody the apex of performance engineering in a powerful, reliable, and warrantied package.  

Stage 1 (DINANTRONICS Performance Tuner ONLY) Maximum Power for the X4 xDrive35i: 360 HP, 392 lb-ft of torque.

Stage 1 (DINANTRONICS Performance Tuner ONLY) Maximum Power for the X4 M40i: 359 HP, 408 lb-ft of torque.

Special Note:

This version of the DINANTRONICS Performance Tuner is ONLY compatible with vehicles equipped with a electronic wastegate. 

Vehicles with a manufacture date prior to 07/2014 should utilize a mechanical wastegate. Vehicles with a production date after 06/2014 should utilize an electronic wastegate. Only a visual identification is 100% accurate. Please consult the wastegate identification guide HERE to accurately identify what is on the vehicle.

Models supported by D440-1639X-ST1
  • 2011 BMW X3 xDrive28i
  • 2011-2017 BMW X3 xDrive35i
  • 2014-2018 BMW X4 M40i
  • 2014 BMW X5 4.8is
  • 2014-2018 BMW X5 sDrive35i
  • 2014-2018 BMW X5 xDrive35i
  • 2015-2018 BMW X6 xDrive35i
  • 2015-2016 BMW X4 xDrive35i
  • 2015-2018 BMW X6 sDrive35i
    Product Specifications:
    Labor Hours/Installation Hours 1.50
    Emission Status 50 State Emissions Legal. California Air Resources Board Executive Order Number D-176-42.
    Max HP Gain 77 @ 5000 RPM (26 @ 5000 RPM on the X4 M40i)
    Max Torque Gain 81 @ 5000 RPM (28 @ 3500 RPM on the X4 M40i)
    Peak Horsepower 360 @ 5500 RPM (359 @ 5500 RPM on the X4 M40i)
    Peak Torque 392 @ 3000 RPM (408 @ 3500 RPM on the X4 M40i)
    Factory Rated HP 300/355 (315 Measured on X4 35i, 332 Measured on t
    Factory Rated Torque 300/343 (330 Measured on X4 35i, 380 Measured on t
    Included Notes DINANTRONICS Performance Tuner, Dinan wiring harness, Dinan Stage 1 software