Today was a good day, more progress was made on the SD1 and my Speeduino install. I removed the standard loom and ECU.
It was inevitable, I needed to pull the plenum off, and pull the standard wiring loom out of the car. Before I started that though, last night I had an idea for a quick blanking plate for the cold start injector I’m no longer using.
I used a small piece of cardboard, rubbed it with a spanner to get a template of the mounting flange on the plenum, and then transferred that to a small off cut of aluminium plate. I then cut it out, filed it down, drilled some holes and on it went. The standard gasket is still in place.
Off came the plenum next. It makes it much easier to get to the LH side wiring with it off. Its only 6 hex bolts, and a couple of hoses to remove. Easy, since I had it off when I did the efi hoses.
This made getting the loom off the engine quite easy. All the broken clips came off easily too 🙃
This is the standard wiring under the dash, just if anyone is interested. The two silver relays next to, and including, the red “relay” are for the ECU. Main relay, Fuel relay, and Steering Module (a trio of diodes in a box).
This is the 5 pin plug that connects the whole EFI system to the car, including main power. This is one plug I didn’t buy new, so I was going to have to cut it off my loom. Thankfully I found a spare transmission harness, which happens to have the correct 5 pin plug, so I’ll cut that off and use it.
So with the loom out, I can begin building up the new loom. I’ll start on this tomorrow night. I’m still working out how to mount the Speeduino in the ECU case, but im thinking I might be able to work up an aluminium off cut to hold the board into the case. The good news is the case does fit on the SD1 ECU board using the standard mounts.