DIS for GMECM

[Bruce Plecan]

Allz said and done, DIS will get you about a 2% less misfire rate.
Meaning thou the AF mixture was lit, the flame front for what ever reasons
was unusual, and genereated less energey for that event.   Not to be
confused with a *miss*.
Coil per Plug can get you an addition 1% improvement, and get right near
100%.
Bruce


> As best I understand it DIS allows a longer dwell (charge time) for a
given
> coil at higher RPM's, resulting in a hotter spark.   You also eliminate
the
> wear of air gaps at the distributor caps.   Less moving parts, less
failure
> points is good from the OEM point of view.
> Also, advance is "unlimited" since you don't run into rotor phasing
issues.
>   This still confuses me, since it's my understanding that there's almost
> no app that you would want more than 45 or so degrees of advance anyway,
> from the tone of a lot of messages recently.
> -> Bob Valentine
> -> bob at tecmark.com

> At 06:51 AM 12/5/2000 -0800, you wrote:
> >DIS=Distributorless Ignition System?
> >So what's the point of trying to get a "DIS" working on an AUJP/730 if my
> definition of DIS is
> >wrong?  Explain to me why there is this holy-grail of getting DIS running
> on a V8/730.
> >Squash
> >--- Chipsbyal at aol.com wrote:
> >> This is not a DIS system as it is a distributor less system. This is a
CNP
> >> coil near plug system. Each cylinder has its own ignition module, coil
and
> >> plug wire. The interface that was at the show only drives the separate
> >> modules. Speed Pro also had an interface to use this CNP ignition for
> their
> >> systems.
> >> AL

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