So, we are there, Nodiz is now controlling the ignition system on my car.
And here’s how;
Installing the Advance Table
I decided that before any major stuff begins, I should connect to the Nodiz module via Bluetooth and set it up.
Using my Apple MacBook – running Windows 10 in a VM (VMWare Fusion) it was initially a bit of a struggle getting the onboard Bluetooth radio to work through Win10. I ended up disabling Bluetooth, and using the plug-in USB dongle that is kindly provided with the Nodiz passing it straight through to Windows via VMWare.
After connecting the unit to the battery, I was able to communicate using the software from Motorsport Electronics. I loaded the advance table from their forums, then told the ECU that engine load information will be provided by a Cosworth 3-bar MAP sensor rather than Throttle Position Sensor. It all seemed happy the Advance Table was written to the onboard memory.
Matt from Nodiz explains this HERE.
With this job done, the time had come to get on with the real work.
This part was simple, 4 self-tapping screws had been used held these units to the scuttle panel (2 in each) and the wiring harness only linked into the car in 3 places (ignition live feed, ground (earth), and tacho) then 2 terminated plugs went to the coil pack and crank position sensor.
- Fit a ‘pull-up’ resistor to the connections at the back of the gauge
- Fit a diode coil driver pack to the ignition coils and use that to drive the tacho
- Do both 1 and 2
I ordered both parts online and got around to making the tacho work this weekend – removing the VDO tacho I soldered a 1 ohm resistor between the 12v feed and the RPM signal wires (pins 2 and 4).