CanTCU Integration

The Canformance CanTCU is a control unit you can add to basically any car to integrate BMW-based ZF 8HP transmissions or the Getrag 7 speed DCTs.

Features

• 100% OEM torque-based control resulting in real OEM drivability
• No additional gearbox tuning needed
• Gear indicator in instrument cluster (including E/D/S/M-modes) (currently only in non-M3 clusters)
• Fully working cruise control (Standard/Braking/ACC)

Integration

The integration is very easy because you basically just need +12V supply voltage, ground and a CAN bus connection.

Depending on your car already having an automatic transmission you need a relay for the rear lights or just connect the existing rear light relay input to a digital output.

CanTCU CAN3 is connected to PTCAN on the car side.

PTCAN-wires can be found in multiple locations, and they are usually colored blue and blue/red. Coding / Programming Requirements

   Car needs to be fully coded as an automatic (S205A in VO/FA) and the DME/DDE programmed using automatic transmission software to support torque interventions
   CAS: AUSWERTUNG_P_HW → nicht_aktiv
   CAS: ABZUGSPERRE_PLOCK_C6 → nicht_aktiv
   In some models CAS will throw a fault code regarding PLOCK. This is fixed by adding an extra ground wire on CAS pin 11

Limitations

   E6x instrument clusters are not able to show higher gears than 7th.

Protocol-specific settings Instrument cluster

On specific models with the “HIGH KOMBI” (instrument cluster) installed, there is a possibility to use “Motorsport”-coding which activates big gear numbers (1-7) and a drivelogic bar display (1-6) which can be configured through CANTCU to indicate drive modes, temperatures, etc.

Torque Correction

Particularly on tuned N54 cars (MSD80/81), the torque value sent by the ECU/DME can be too low, resulting in spongy/slow shifts. The torque correction factor can be used to adjust this torque value if needed (percentage correction). On diesel engines (DDE6/7) an inaccurate value can only be caused by a bad tune. On stock engines the value is always accurate. The torque correction factor is just a band-aid meant to be used as last resort. The right way is to have the engine report correct torque even when tuned.