xHP Gearbox Tuning | BMW Gearbox Tuning | Remapping

xHP Gearbox Tuning

xHP Flashtool is the worldwide first and complete Tuning solution for BMW’s with ZF6HP and ZF8HP automatic transmissions. This groundbreaking piece of software unlocks the BMW ZF automatic gearboxes, allowing for faster shift times, more power & better response.

We offer three stages of tune for the ZF gearboxes, all set up slightly differently to suit different styles of driving;

Stage 1 TCU Tune

  • Optimised D Shiftpoints to facilitate sporty, yet economy style driving
  • Optimised Shift Strategy for up/downhill driving
  • Optimised Warmup Behaviour
  • Optimised Torque Converter Lockup in 1st/2nd/3rd gear
  • Torque Limits set to 1000 Nm (737ftlb)
  • Kickdown delete in Manual Mode
  • Gear Display in Dash in D/S/M Modes

Stage 2 TCU Tune

  • Optimised D & S Shiftpoints for better acceleration in part and full throttle situations
  • Approx. 25% faster upshifts in D/S/M modes
  • Faster paddle response time
  • Optimised Warmup Behaviour
  • Optimised Torque Converter Lockup in 1st/2nd/3rd gear Optimised Warmup Behaviour
  • Torque Limits set to 1000 Nm (737 ftlb)
  • Gear Display in Dash in D/S/M Modes

Stage 3 TCU Tune

  • Optimised D & S Shiftpoints for better acceleration in part and full throttle situations
  • Approx. 25% faster upshifts in D/S modes
  • Approx. 50% faster upshifts in M mode
  • Rev Matched downshifting (Throttle – Blip)
  • True manual mode (no forced upshift at limiter)
  • Instant paddle response time
  • Optimized Torque Converter Lockup in 1st/2nd/3rd gear
  • Optimized Warmup Behaviour
  • Torque Limits set to 1000 Nm (737 ftlb)
  • Gear Display in Dash in D/S/M Modes

The TCU Tuning Process

We start off by connecting the car up to a battery support unit. This is very important as the TCU is sensitive to voltage drops when programming – a voltage drop can cause failure of the TCU unit, and leave the car undriveable. We then perform a full diagnostic health check to ensure there are no existing faults or problems with the gearbox. It’s skipping these simple measures that cause a lot of issues for the DIY installers.

We then hook up our TCU Flashing Tool in programming mode, connect to the car with the xHP software, and unlock the TCU for programming. At this point the car is then able to accept any of the OTS maps depending on customers preference.

The Benefits of TCU Tuning

Tuning your gearbox is not only about getting quicker or holding more power. An automatic transmission is deeply involved into vehicle dynamics and contributes to the overall driving experience. From crawling in traffic, motorway driving or taking your vehicle to a track day, the TCU widely defines how your car feels. The same way that everyone drives differently with a manual, the maps inside the TCU hide the secrets to tweaking your automatic transmission to your personal liking.