ECU/fuel/transmission questions for a turbo build

[thecapedcapper]

Stock ECU will work for transmission when the engine side is removed. I did it for a few years with a diesel conversion. Eventually did a stand-alone TCU. Check engine light will be on but you can cut that lead. The TPS is the only signal you’ll have to feed into both computers

What all did you need to feed into the stock ECU then to control the trans? Just TPS and power since (and the trans output speed sensor that comes from the trans anyways)?

 

[cjmoon]

What all did you need to feed into the stock ECU then to control the trans? Just TPS and power since (and the trans output speed sensor that comes from the trans anyways)?

tps and temp sensor. there are some shifting and TC lock changes based on temp input.

 

[thecapedcapper]

tps and temp sensor. there are some shifting and TC lock changes based on temp input.

Water temp?

 

[jaymar]

I wired mine in. I’d recommend paying for Injector Dynamics injectors. If you don’t have good data for the injectors everything else in your tune becomes a real pain to get right. Being your first standalone good Injector data will save a bunch of headaches. If your cruiser is auto you will want to wire the haltech as a parallel or piggyback and let the stock ecu run the trans. I cut the engine light wire and have the haltech using the light to show any errors. The wiring will be intimidating at first but you will figure it out with the wiring diagram.

How are those injectors holding up, and how many miles has it been now?