Haltech elite 2500 - JDM Supra - do I need my TRAC control ECU???

[RZtwin]

I have a 93.5 JDM Supra RZ 6spd. When I first purchased in 2010 I ditched the Trac ECU because I did not like the way it managed wheel slip.. I recently installed my new Haltech 2500 Elite, seems to run fine after some minor remote tuning to AFR's and idle. Before I go to far and bring car to dyno/tuner after single turbo swap, do I need to reinstall the TRAC ECU ?

 

 

[Mike2JZ]

You dont need TRAC ecu. It wont work anymore when stock ecu is removed

[Halfwalker]

The Elite 2500 will do traction control really well. You can pick up the wheel speed signals from the T9 traction ecu ecu connector - that's a better place to get them as the signals have been cleaned up from the raw ones coming from the ABS wheel speed sensors.

 

Function                         Haltech pin     Supra pin   Function, wiring manual page #   Wire color             Connects to ...
Rear left wheel speed	Input    Elite-B08       T9-A07	RLO, Rear left wheel speed #165       GR-R Grey-Red          A21 ABS pin 4
Rear right wheel speed	Input    Elite-B10       T9-A19	RRO, Rear right wheel speed #165      Y-B Yellow-Black       A21 ABS pin 6
Front right wheel speed	Input    Elite-B07       T9-A20	FRO, Front right wheel speed #165     LG-B LightGreen-Black  A21 ABS pin 13

[phobos]

The Elite 2500 will do traction control really well. You can pick up the wheel speed signals from the T9 traction ecu ecu connector - that's a better place to get them as the signals have been cleaned up from the raw ones coming from the ABS wheel speed sensors.

 

Function                         Haltech pin     Supra pin   Function, wiring manual page #   Wire color             Connects to ...
Rear left wheel speed	Input    Elite-B08       T9-A07	RLO, Rear left wheel speed #165       GR-R Grey-Red          A21 ABS pin 4
Rear right wheel speed	Input    Elite-B10       T9-A19	RRO, Rear right wheel speed #165      Y-B Yellow-Black       A21 ABS pin 6
Front right wheel speed	Input    Elite-B07       T9-A20	FRO, Front right wheel speed #165     LG-B LightGreen-Black  A21 ABS pin 13

 

That's exactly what I am doing on my Supra. I upgraded to 98+ ABS and will use the digital wheel speed outputs of the ABS ECU on the Elite for traction control. Just make sure to enable the internal pull-up resistors on the Elite.