2JZ-GTE in an AE86 GT questions

[AndrewGL]

Hello Folks,

My friend has done with this swap mechanically, but having doubt about the possibilities of ECUs.

The target engine is a JDM twin-turbo 2JZ with MAP sensor and 6-gear manual tranny, but he doesn't have any ECUs to try with (don't ask why, long story...).
It is clear, that the easiest way would be to buy a programmable ECU (and pay for programming it), but
the car is not intended to be a racecar, so it doesn't really need to have a easily tuneable ECU (or tuneable at all), after the setup is complete, and the engines is working in the car.

On my proposition, he's thinking on a factory Toyota ECU (chosen for exactly this kind of engine, of course) without any modification or piggy-back. This would be a low-cost solution, 'cause there is a ECU for sale (with added or w/o traction control ECU) and it's price is about 1/3 of the cheapest programmable ECU.

The base of the question is: does the main ECU certainly need the signals of traction control ECUs to run?
I'm not sure if the AE86's running gear could give any kind of signals for it...

Thanks for any kind of help!