[Gmecm] Injector sense - addendum

[Rob Handley]

Phew! That's great news. :-)

It looks like, for $58, it's address $036A 'KAPLL', and the standard Sunbird 
value is 0.793 ms.

Many thanks Ryan,

Robin

----- Original Message ----- 
From: "Ryan Hess" <rgmecm at yahoo.com>
To: <gmecm at diy-efi.org>
Sent: 03 September 2007 20:12
Subject: Re: [Gmecm] Injector sense - addendum


> That is correct.  It doubles up on the BPW and fires half as often, 
> because the injectors can't reliably and accurately meter fuel in such 
> short times.
>
> There are some values in ROM you can change to set what this switch point 
> is.  It's called the "minimum base pulse width" or some such...  I think 
> most binaries have it set to ~0.98ms
>
> Ryan
>
> Rob Handley <Robin at FuryWorld.fsnet.co.uk> wrote: Just had another go with 
> the new 'scope.
>
> If I read it right, when the BPW is very short (e.g. sub 1 ms) the 
> injectors
> AREN'T fired every crank revolution, but ARE every 2 (as I thought I saw
> with the old 'scope). This makes sense. Does it stack up with anybody's
> understanding of the code?
>
> This conclusion is based on me changing the relevant contents of the VE
> table, with the engine idling, from 30% to 99%. The ALDL-reported BPW 
> jumps
> from just under 1 ms to about 2 ms.
>
> Interesting.
>
> Robin