jB4 and TCU

[Rovermud]

I'd like to hear opinions on adding a TCU with the JB4. I'd like to hear thoughts on which TCU as well.

Thanks!

[Legion]

An interesting question.

The JB4 is using the factory ECU/TCU as far as torque settings go.

So the question I think should be, if you installed a TCU that increased the torque limit would the factory ECU take advantage of that?

[InfiniteEnd]

I feel like you'd be able to adjust settings in JB4 to account for it. We already are able to stack JB4 on tuned cars too - just not as aggressively I think.

[George @ BMS]

An interesting question.

The JB4 is using the factory ECU/TCU as far as torque settings go.

So the question I think should be, if you installed a TCU that increased the torque limit would the factory ECU take advantage of that?

Most TCU flashes max the clamping pressure far sooner than max ECU torque. The clamp starts typically as torque builds up and reaches a max at around 320nm read torque so it is just as effective as on a flashed car.
The big benefit is more the way the transmission works than for clutch slip. Majority of TCU tunes are needed more due to torque limitation on a flashed car than for clamping pressure. On stock turbo benefit is more on how the transmission works if the specific model has lazy programming.