[Gmecm] Auto-tune algorithm for real-time tuning programs

[Sjödin Robert]

Mark, have you had a look at VEphd by Craig and Alvin? Their program adjusts individual cells of the VE tables based on both BLM and INT. Input is csv-log by eg Datamaster.

I've found VEphd together with a smoothing program really useful. What is missing is a nice user interface. I was told Craig named it VEphd because you need a PhD to be able to run it :) Anyway, they provide the source code so perhaps you could use some of that?

I've also tried VE master and it is a good program. But I think VEphd will tweak your VE tables a little better but requires more work. Someone out there who has tried both programs? I've only tried both on one car so it would be nice to see if someone else have come to the same conclusion.

Rob





-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Mark Mansur
Sent: den 27 augusti 2005 01:12
To: List relating to GM OEM ECMs
Subject: Re: [Gmecm] Auto-tune algorithm for real-time tuning programs


I sure have. The next version of TunerPro has the first step implemented - 
that of correlating ALDL data with editor data. Realtime auto-tuning 
(there's a good pun there, eh?) is another logical step of evolution. Look 
for it soon.

M

----- Original Message ----- 
From: "William Lucke" <william.lucke at highspeedlink.net>
To: <gmecm at diy-efi.org>
Sent: Friday, August 26, 2005 4:07 PM
Subject: [Gmecm] Auto-tune algorithm for real-time tuning programs


> The latest generation of AEM EMS's have an "autotune" feature that 
> allows
> the computer to dial in its own fuel map based on the readings of a wide 
> band O2 sensor.
>
> The only portion of that algorithm that is not currently available for 
> DIY
> tuning of GM computers is a feedback loop linking BLM's to VE table 
> values. This still has to be done manually. I wouldn't think it would be 
> terribly difficult to add that algorithm to a real-time tuning suite like 
> TunerPro RT or TunerCAT RT. The software could look at the datastream and 
> after the BLM value in a given cell has stabilized, would modify the 
> corresponding VE table entries to reflect the value of that BLM cell. I 
> know that each BLM cell accounts for multiple VE cells, so some smoothing 
> and conditioning and interpolation would be involved, but the problem is 
> pretty simple computationally.
>
> That way, you just drive around with an emulator in your computer and 
> a
> laptop in your passenger seat and the fuel map basically dials itself in 
> as the BLM's change. It will still require tuning of the spark table and 
> final manual adjustments/smoothing to the VE tables, but it would save a 
> whole lot of time and effort.
>
> Has anyone else been thinking of this?
>
>
> Will
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.344 / Virus Database: 267.10.16/83 - Release Date: 8/26/2005
>
>
> _______________________________________________
> 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