[s-cars] Fuzz logic vs adaptive learning

[Mark Strangways]

Ohh yeah, BTDT with the MTM Lehman stuff and a stiffer spring.
When would in makes for great great great part throttle response, but sure
plays havoc with the cruise control.
I just can't respond fast enough to the boost.

But it's fun.

Mark S
----- Original Message ----- 
From: "Mihnea Cotet" <mik at info.fundp.ac.be>
To: <FvAMI at aol.com>; <kirby.a.smith at verizon.net>; <QSHIPQ at aol.com>
Cc: <s-car-list at audifans.com>
Sent: Monday, January 26, 2004 12:11 PM
Subject: Re: [s-cars] Fuzz logic vs adaptive learning


> Yup, I fully agree with you from this standpoint Feico...
>
> Programming the Motronic to allow 90% of full boost at 30-40% TPS and/or
> 90% WGFV duty cycle works, and a stiffer WG spring as well actually, I've
> BTDT several times.
>
> What you don't want however, is too aggressive timing settings/too lean
> fuel settings at part throttle, exactly where boost wasn't present before,
> because otherwise it might end up not running properly.
>
> Another thing to consider when doing so is the factory cruise control
> system, I've also BTDT in some cases where it couldn't keep a constant
> speed anymore, because too much boost was generated at too low throttle
> openings, but if care is taken in programming the WGFV map at those
> particular points where the cruise control is active, it will work ok
IMO/IME.
>
>
> HTH,
>
> Mihnea
>
> At 12:03 26/01/2004 -0500, FvAMI at aol.com wrote:
> >You would need to have a Normally Open solenoid to do this.
> >
> >The other option I once thought of was to use the stock solenoid invert
> >the signal to the solenoid and/or connect the V+ to GND and confirm the
> >Motronics had the ability to continuous source the current to the
solenoid
> >(It sinks the current) ... the only problem is the solenoid would be
> >active for 99% of the time and you would substantially decrease the life
> >of the solenoid ... in addition the Motronics unit would be sourcing in
> >excess of 1 amp to the solenoid almost continuously.
> >
> >The older Audis may have a normally open solenoid. Personally I felt it
> >would be better to do an analysis first on exactly the response time of
> >the standard system. Some more aggressive boost programming may be able
to
> >compensate for the response time ... i.e. program the Motronics unit to
be
> >at 80% - 90% maximum boost at lower throttle settings.
> >
> >Best regards,
> >Feico van der Laan
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