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  • m4ff3w

    Feb. 1, 2012 5:29 a.m. m4ff3w SuperDork

    I've read that MS2/Extra can run 6 ignition outputs, but in the MS2/Extra manual - I don't seem to find anything about the extra spark outputs.

    I've ran MS for fuel before, but never ignition. I don't think anyone has successfully ran a Biturbo on Megasquirt, but they are running on VEMS and Haltech.

    http://www.vems.hu/wiki/index.php?page=MembersPage%2FESjaavik%2FMaserati

    That page has lots of good info on the ignition setup. So it seems like wasted spark isn't an option.

    So is it indeed possible to have 6 ignition outputs in MS2? Would I then be using all of my outputs, not having something available for boost control?

    Any assistance is greatly appreciated!

  • MadScientistMatt

    Feb. 1, 2012 7:56 a.m. MadScientistMatt SuperDork

    It's possible. You'd start with the notes on 4 spark outputs:

    http://www.msextra.com/doc/ms2extra/MS2-Extra_Ignition.htm#3coils

    Spark E and F use the ADC output pins, as shown on this list.

    http://www.msextra.com/doc/ms2extra/MS2-Extra_Hardware.htm#ms2options

    There's not much left if you do this, but you could have boost control with one of the IAC outputs. Or you could step up to an MS3 and have plenty of I/O.

  • m4ff3w

    Feb. 1, 2012 8:35 a.m. m4ff3w SuperDork

    Thanks, Matt.

    Sadly, MS3 is way out of my budget.

  • pres589

    Feb. 1, 2012 9:54 a.m. pres589 Dork

    Is waste spark not possible with the firing order you're dealing with?

  • m4ff3w

    Feb. 1, 2012 2:00 p.m. m4ff3w SuperDork

    My understanding is that wasted spark is not an option on the odd-fire V6.

    I could, and hope that I am, wrong. 1-6-2-5-3-4 is the firing order.

 
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