RE: DFI

["Peterson, Lew [Cont]" <lew.peterson@cdott.com>]

Bruce et al
The on-the-fly emulator from Tech Tools is $695. Their budget emulator is
only $249 (that is what I have for 1 MBit EPROM's) but it doesn't allow one
to do things 'in-action'. The ASM system seems to be more ECM specific.
Lew

-----Original Message-----
From: Bruce Plecan [mailto:nacelp@bright.net]
Sent: October 1, 1998 9:33 AM
To: Peterson, Lew [Cont]; 'Tony Sheridan'; syty@syty.org
Subject: Re: DFI


OK, why not a emulator, and promgrammer.
Emulator, $250
Promgrammer $15
Cables, etc what $35.
Used laptop $150,
or am I missing something?
Bruce


>Arizona Speed and Marine has a system that allows programming of the ECM on
>the fly---if you are that brave. As I recall they want around a grand for
>the system.
>Lew
>Calgary
>
>-----Original Message-----
>From: Tony Sheridan [mailto:tsheridan@xetel.com]
>Sent: September 30, 1998 8:57 PM
>To: syty@syty.org
>Subject: Re: DFI
>
>
>
>
>
>        I've had a DFI(s) in my '74 Corvette(TPI retrofit) for about 5
>     years.  I don't know if they've updated their software since I
>     purchased mine, but it's quite primitive. The documentation wasn't
>     that great either(boringly redundant). The DFI is MUCH simpler in it's
>     approach to controlling a FI system. This is the systems biggest
>     advantage AND disadvantage.
>        The first DFI system that I purchased was a unit that "piggy backs"
>     the GM computer. It plugged directly into the GM computer. The GM
>     computer then plugged into it. It would only control wide open
>     throttle/ignition, the GM computer still controlled all other areas.
>     This system worked pretty well. I'm not sure if it is still in
>     production.
>        I wanted more control over idle/drivability, so I moved up to the
>     stand alone system with wiring harness(required). The harness was
>     pretty generic. I had to completely disassemble it and reroute the
>     wiring to accommodate my 74 Corvette's rear mount battery as well as
>     other things.
>        The beauty of these systems is the ability to reprogram while
>     driving down the road. You have the ability to edit whole tables by a
>     single percentage/numeric value. You can also edit a single value in a
>     table. You cannot however, edit a portion of a table. To do this I
>     used Excel to convert the data files(ASCII) to a spread sheet for
>     faster, more robust editing.
>        The DFI only allows 6 perameters(of your choice) to be
>     monitored/collected at once.
>        DFI has no boost control, so you'll need one of those as well. Each
>     system does have the ability to use a 1, 2, or 3 bar MAP.
>        Once dialed in, the DFI is very good to the hard core racer.
>     Because of it's simplicity it is VERY good for a bracket car. It is
>     possible to run very consistent ET's, and as an added bonus, really
>     intimidates your opponents! This system paid for itself in wins!
>        For 99.9% of us, I recommend sticking to the GM computer(but still
>     consider the separate boost controller), especially with all of the
>     folks on this list programming chips. GM's computer is far more
>     sophisticated than many people give it credit for.
>
>     There are also other systems out there that may be worth looking into.
>     T.E.C. for instance, comes with an awesome ignition system!
>
>     Tony Sheridan
>     93 ty #2166
>     92 ty #2415(mashed)
>     74 Corvette(conv.)
>     75 Hurst/Olds
>
>