Ignition Advance Display

[lotustwincam]

I have just recently completed the assembly (TPS) and all checks out ok so far,

Have had a trial fit in the car. System operates fine on EDIS alone. However, when I connected the MJL, although I could change the advance on the laptop at (or around idle) I couldn't detect any noticable difference to the running of the engine whether I set it for 10 degrees or 20 degrees.

I should point out that due to a very non understanding neighbour, I only had the engine running for less than a minute, and it was hunting a bit due to being cold.

My question is this. Say for example the Ignition Advance digits give me a reading of 12 degrees at 1000 RPM. If I change the advance for that cell to say 20 degrees and write to MJ then the digits jump to 20 degrees. Are the digits showing me the ACTUAL advance of the ignition or are they showing me what MJ is trying to tell EDIS to change to?

I supppose in simple terms I'm asking is the ignition advance display the output signal from MJ or the input signal from edis? Or have I got it all wrong?

Thanks

Drew

[brentp]

Hi Drew,

Yes: the ignition advance display indicates the ignition advance value the MJLJ is sending to the EDIS module on the SAW line. Since you're seeing the RPM signal it appears you have the PIP signal connected correctly; double check the SAW connections and verify with a timing light that the advance changes as you change cell values and then write it back to the controller.

With the crank fired setup, you'll observe a rock-solid timing, and as you adjust the timing parameters you should see it change in very precise steps!

Regards,