Enhance Your E-Chassis 8HP Transmission with Precision OEM-Grade Tuning

Unlock the full potential of your BMW equipped with the ZF 8HP45 transmission. Whether your E-chassis came factory-equipped with the 8HP45 or was upgraded using OEM components, this calibration delivers fast, clean, and consistent shifting optimized for both daily driving and high-performance use.

With extensive experience tuning ZF 6HP and 8HP transmissions, we identified a clear gap in the market once E-Series 8HP swaps became common. Existing solutions relied on external controllers or generic calibrations that compromised OEM behavior. Our E-Series 8HP tuning was developed to address that need with proper, in-depth transmission calibration.

22RPD is the only company offering true OEM-level ZF 8HP tuning for E-chassis BMWs. No external TCU controllers are required. No XHP, CANtcu, or Turbolamik. This is full transmission calibration at the OEM logic level.

No CAS swap required.

We offer true custom tuning. Every calibration is built for the specific vehicle, power level, and use case. This is not a generic file or preset. We have access to 20k+ calibrateable parameters.

This tune refines the ZF control strategy to provide smooth, predictable shifts at low load, while delivering firm and rapid gear changes when performance is demanded.

Optimized Shift Behavior

Our E-Series 8HP45 tune improves:

• Crisp, ultra-quick upshifts

• Smooth, consistent torque transitions

• Reliable performance under high-power applications, including supercharged N52 setups

• Daily drivability without harsh or jerky shifts

Features and Options

Each E-Series 8HP tune may include:

• Optimized shift points for E-chassis powerbands

• Precise shiftpoints control

• Optional Drag Mode with reduced torque intervention and shift pressures
  
  

• Gear-specific shift behavior refinement
  
  

• True manual mode
  
  

• Gear display in D mode where supported
  
  

• Support for naturally aspirated and forced-induction N52 setups
  
  

• Support for N54 8HP swap applications (stock and built transmissions)

• Support for rear end ratio changes
  
  

• Optional kickdown activation or deactivation

• We offer true custom tuning, if you need a feature that we already do not support. Contact us and we can look into it.
  
  

This tune focuses on maximizing shift performance and drivability within the limits of the ZF 8HP45 hardware.

Tuning Availability

Offered as remote or in-person custom calibration for E-chassis BMWs running the ZF 8HP45, without the need for aftermarket TCU solutions.