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BMW · Gearbox Tune

BMW 435i N55 ZF8 Gearbox Calibration

Mobile BMW work by MTechTuning, with dealer-level diagnostics before and after.

BMW 435i N55 ZF8 Gearbox Calibration

This BMW 435i received our ZF 8-speed gearbox calibration, programmed through the OBD port with AutoTuner, for quicker shifts, sharper paddle response and better use of the N55 engine's power and torque.

Why tune the ZF8 gearbox?

The 435i's N55 3.0-litre turbo engine is already quick, but the factory ZF 8-speed calibration is set up for comfort and economy. A gearbox calibration makes the car feel sharper and more responsive while keeping smooth, factory-like behaviour in normal driving.

What the gearbox calibration includes

  • Optimised D and S shift points for better acceleration at part and full throttle
  • Faster shifts overall
  • Faster paddle response
  • Optimised torque converter lockup
  • Torque limits raised to match a tuned engine
  • Gear display activation

Backed up and reversible

The original TCU software was read and saved before programming, so the gearbox can be returned to standard if ever needed.

Can you tune the gearbox on its own?

Yes. A gearbox calibration can be done on its own or alongside a Stage 1 or Stage 2 engine tune. We tune BMW ZF gearboxes at your home or workplace across Bristol, North Somerset, Somerset and South Wales.

BMW 435i N55 ZF8 Gearbox Calibration photographed by MTechTuning
  • Dealer-level diagnostics before and after
  • Fully mobile, at home or work
  • Lifetime software warranty and support
  • 14-day money-back guarantee

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