[Gmecm] Stoich AFR and constants table

[Craig Moates]

Per,

You can use the TunerPro or TunerCat software to make changes on the fly without interrupting your ECM operation. No resets needed
if you've got a decent emulator hooked up. There's several out there (I know I make a couple of em).

I believe the stoich AFR will impact the target AFR which the ECM tries to achieve based on the switch points of the O2. It should
impact both the learned fueling and the 'open loop' fueling. Anyone care to corroborate or refute?

Not sure what you mean by bad readings on the ALDL. What did you see?

Best regards,
Craig Moates



----- Original Message -----
From: "Per Lonnborg" <perlon at passagen.se>
To: <perlon at passagen.se>; <gmecm at diy-efi.org>
Sent: Thursday, June 29, 2006 5:06 AM
Subject: Ang: [Gmecm] Stoich AFR and constants table


Hi again,

I don?t seem to have got any answers regarding the (1) "Stoichiometric AFR" constant in 1227747/AMUR, and (2) my thoughts about
changing
constants values on the fly(driving)

Perhaps Craig can help me out with the on-the-fly tuning part?

/Per

>----Ursprungligt meddelande----
>Fr?n: perlon at passagen.se
>Datum: 2006-jun-26 11:12
>Till: <gmecm at diy-efi.org>
>?rende: [Gmecm] Stoich AFR and constants table
>
>Hi!
>
>I have 2 questions:
>
>1. I am doing some testing with ethanol fuel (E85) in my ?747 TBI 350, and I wonder if anyone knows how the "Stoichiometric AFR"
constant
>affects the fuel metering?
>
>Does it for affect for example affect MF tables without not needing to alter the actual tables?
>(I changed AFR from 14.70 to 9.90 which is the AFR for ethanol with 15% gasoline)
>
>
>2. Can you change values in the Constants Table on the fly (driving), for example using Moates G2X TBI-Type Switching Adapter or
Tuner
Pro
>Emulator, without upsetting the ECM or does it need to be resetted (power on/off)?
>
>It seems to me that when I switched to the 9.90 AFR .bin and then went back to the 14.70 .bin on the highway, I got totally wrong
ALDL-
>readings.
>
>
>/Per Lonnborg
>
>350 TBI ?747 Chevy Monza
>
>Stockholm, Sweden
>_______________________________________________
>Gmecm mailing list
>Gmecm at diy-efi.org
>http://lists.diy-efi.org/mailman/listinfo/gmecm
>


_______________________________________________
Gmecm mailing list
Gmecm at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/gmecm