Beiträge von jensw

  • Ignition advance data

    Row 0 is when the gas pedal is in its neutral position.
    You must know that this is a temporary ingnition map for me. The engine runs nice, but still not perfect.
    The jump at 3500 rpm is to prevent the banging out of the exhaust pipe. When you go to load 0 at higher than 3000-3500rpm the partially unburnt mixture will go out of the cilinders into the exhaust manifold. And because (if there wouldn't be any advance) the ignition timing is very late, it will explode in the exhaust. Some might think it sounds nice, but on the public road it's 'a bit overdone' :wink:.


    What is your engine setup? Mine is a 34DMTR carburetor, high compression pistons and a fast road camshaft. All these things influence how far you can go with the ignition advance, so mine ignition map might not work optimal for you.

  • Ignition advance data

    Zitat von Abarthracing

    Offtopic: Windows on a Mac? ;)


    Yes! I don't want to buy a windows laptop just for adjusting the ignition :)



    Stimmt eli.m!It really is a nice system. I'm still adjusting a few bumps and dips in the curve, but when that is finished it runs very smooth. Sorry for the english, my german is very bad.


    Commercial break :wink: KMS website (the ignition system I'm using)

  • Ignition advance data

    I think you'll have to wait till tomorrow. For adjusting the controller I run windows on my laptop, but now it needs some activation or something. I use a TPS.
    The main difference is that I have adjusted the system so I have more power in the higher revs without knocking in the lower revs. It is far more accurate than an ignition with a mechanical distributor so it runs a lot better in every situation. It is less a compromise than a mechanical distributor.

  • Ignition advance data

    I swapped my Abarth distributor with a Van Kronenburg KMS ignition controller. Also distributorless. I will try to copy the data to this forum but the curve might not work for you as I'm driving with a 270 or 286 deg. camshaft (don't know for sure which.. I'm sorry), high compression pistons, bigger intake valves etc. You might want to adjust the times a little bit but at least you'll have something to start with.