Race+ uses one common installation method for all supported ZF 8HP transmissions, simplifying the wiring and installation process. Existing legacy-wired installations are also fully compatible with Race+.
The same wiring method is used regardless of the transmission's original vehicle manufacturer.
¶ Transmission Wiring
All supported Race+ 8HP transmissions use the following connections:
| Transmission Pin | Function | Connect to |
|---|---|---|
| 5 | CAN High | CANTCU CAN1 High |
| 6 | CAN Low | CANTCU CAN1 Low |
| 9 | Wake-Up | CANTCU WUP |
| 13 | +12 V | Dedicated fused +12 V supply (see Power) |
| 14 | Ground | Ground |
¶ CAN
Connect transmission pins 5 and 6 to CANTCU CAN1.
- Pin 5 → CAN1 High
- Pin 6 → CAN1 Low
Use twisted-pair wire for the CAN connection.
Only CAN1 is required for transmission communication with Race+. CAN2 is not required.
¶ Wake-Up
Connect transmission pin 9 to the CANTCU WUP output.
WUP provides the transmission with a +12 V wake-up signal while the system is active.
¶ Power
Connect transmission pin 13 to a fused +12 V supply and pin 14 to Ground.
CANTCU and the transmission should use the same switched power supply, preferably powered already in the Accessory (ACC) position if available.
Use a dedicated 15A fuse for the transmission +12 V feed. Feed transmission pin 13 through its own fuse, separate from the CANTCU supply, and place the fuse in an easily accessible location such as inside the car or in the engine bay.
When Race+ is installed with the 8HP TCM Tool, the transmission must be power-cycled a few times. With a dedicated fuse, this is done by removing and reinserting the fuse while CANTCU stays powered. Without it, the transmission connector has to be physically disconnected and reconnected under the vehicle, which normally requires a lift.
A time-delay relay is not required with Race+. Transmission adaptations are saved automatically during normal operation.
¶ Diagnostics
A separate transmission OBD connector is not required with Race+. Diagnostics are handled through CANTCU.
Transmission programming, backup and setup are handled using the 8HP TCM Tool.
¶ Shifter
Shifters are connected normally according to the selected shifter. Depending on the shifter, communication is connected to CAN1 or CAN3.
See Supported Shifters for supported models, wiring and pinouts.
¶ Prepare the Transmission
Before first use, program the transmission with Race+ using the 8HP TCM Tool.
For a stock transmission, create a backup before installing Race+.
During installation, the 8HP TCM Tool asks you to power-cycle the transmission a few times. Remove the transmission fuse, wait for the tool's instruction, then reinsert it. If no dedicated fuse is installed, disconnect and reconnect the transmission connector instead.
¶ Configuration
After Race+ has been installed and the transmission is connected, configure it through the CANTCU Configurator.
See Race+ Configuration for the available settings.