[svxistentialist]

Originally Posted by b3lha

Joe,

The JDM and Euro TCUs are probably the same hardware, but the software is different. Pin 4 signals the TCU to change shift maps. On a Euro TCU, you ground pin 4 to enable Economy mode. On a JDM car, you ground pin 4 to enable Power mode.

There are two ways you can make a power switch on a car with a Euro TCU:

1) Mess with the TPS signal as per the FAQ.
2) Swap in a JDM TCU and then remove the bulb from the Econ light on the dash. This will make your Econ switch into a Power switch. AFAICT the JDM TCU should work fine with the Euro transmission.

Phil.

Hi Phil

This week, I put the TCU in, the JDM one I bought while I had ICBM[aka Plum]

It worked precisely as you said. When I put on the Econ switch on the gear lever, it lights up the Power light AND the Econ light on the dashboard.

I'm presuming I have switched on Power mode, so I will remove the Econ bulb later, if I retain the JDM TCU.

I still have not solved the speed signal conundrum. I am still stuck in 1 range, and no speed showing on the speedo.

Joe