[Diy_efi] Estimation of spark advance

Bruce nacelp at bright.net
Sun Apr 21 12:44:14 GMT 2002


From: "Carsten Beth" <Carsten.Beth at Informatik.Uni-Oldenburg.DE>
Subject: [Diy_efi] Estimation of spark advance
> Some time ago I wrote to the list that I build a EFI solution to replace
> the mechanically controled system of my motorcycle (Honda GL1000, 1977).
> It's a microcontroler based system, which is triggered from hall sensors
> and drives IGBTs.

> The next step is to adjust spark advance.

If you really think your as good as or better then the Honda engineers,
well, knock yourself out, but I'd accurately map out what they have, and use
that.   If you go to a high resolution map then maybe you can improve on it
a little, but I really wouldn't be looking for any huge gains.  Motorcycle
(touring) is going to be conservative, tune wise, an increase in timing,
might just get you some galled rings in stop and go traffic.
Bruce



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