[b3lha]

Secondly, I have managed to modify the ECU. Remember the printed circuit boards I had made up?



I was having trouble finding the components to go on them, but Calum was able to source them for me. Thanks again Calum.

The first step was to fit a socket onto the motherboard of my ECU. Most SVXes already have a socket, but my JDM ones don't.



The procedure is exactly the same as described in the TCU mod above. Clean out the holes and solder in the socket. I also removed the tan resistor that activates external memory.



Then I started to build one of the boards



First I soldered the components to the top side



Then I fitted the pin lines on the underside that plug into the socket on the ECU.



Then it's just a case of writing the eeproms and plugging it in.



I went out to the car, plugged it in and it works perfectly. As before I used the select monitor adapter to download part of the modified program and compare to my original file.

How much more horsepower do I have? None. Yet. My black 92 is now running the JDM 94 program with the 180km/h speed limiter code removed. I'll reprogram the eeproms as and when we come up with some useful mods.

Phil.