A GN Promdata Question

[Mark Romans]

BTW send me a copy and I'll take a look.
Oh and 86 has a bunch of offsets that are different than 87/88 which are
differn't than 89...
Mark
-----Original Message-----
From: JTesta1966 at aol.com <JTesta1966 at aol.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Saturday, June 26, 1999 5:40 AM
Subject: A GN Promdata Question


>Well guys, actually 2 things
>
>1) What is an "Idle speed inverse quantizer" for? What does it do, and what
>can be effected if you screw with it? I'm having a hell of a time getting
my
>cold idle right in my 86 GN. I've tried everything I understand in the chip
>and nothing seems to help. The peoblem happens warm too, but slightly
>differently. On cold start I get  fast idle after a few secs. Which BTW
seems
>to lower itself too much, I believe this is the lean calibration GM used? I
>played with low coolant A/F and moved it in a couple steps to its current
>13.8:1 but didnt really make a difference. I've tried playing with IAC
park,
>warm idle IAC park, low coolant temp A/F., but nothing I touch seems to
make
>a difference. I write down all the changes I make so I know what to put
back
>and whatmade a difference and so far I think that quantizer thing is the
only
>thing I havent screwed with. Do any of you guru's have any suggestions? If
>any are willing, I'd be happy to send the bin for this chip and get
>comments/suggestions on where my tuning has fallen short. Oh, BTW its an
86-7
>cal.
>
>Thanks in advance
>Jim
>