More Projection stuff

[Steven Gorkowski]

Would you sell the bad box ? if so How much ? contact me off line.
Steven Gorkowski

Email me at
kb4mxo at mwt.net

Fitzgearld, Fredric wrote:

> HuMmmmmm...  I was told that the #502-20 (Universal 2D Digital System
> $625.) replaced the, now discontinued, 502-2 (analog system ~$500.).
> It's so new (I guess) that I didn't even see it on Holley's WEB page
> when I went to look.  The 4D and 4Di are about 2x the price.  I would
> love to have the 4Di but the low end will do just as well, for my
> application (rock crawling).  If they send me an analog system, it's
> going back.  I don't want any part of that, again.
>
> I shouldn't have any trouble tuning it as I had the analog system for
> a
> while.  The brain died and they said it would cost $400. to replace
> it.
> So, instead of trying to fix/replace the analog ECU I just broke down
> and got the "NEW" system.  I'm hoping that the analog injectors, TPS,
> and stuff will be compatible with the anolog system as I have a bunch
> of
> new stuff for that system.
>
> You can see the info at:
> http://www.jegs.com/cgi-bin/genpg.pl?products/Fuel/projec/
>
> FEF
>
> ______________________________ Reply Separator
> _________________________________
> Subject: Re: More Projection stuff
> Author:  Bruce Plecan [SMTP:nacelp at bright.net]  at MSXGATE
> Date:    4/1/98 10:05 AM
>
> -----Original Message-----
> From: Fitzgearld, Fredric <fredric.fitzgearld at intel.com>
> To: diy_efi at coulomb.eng.ohio-state.edu
> <diy_efi at coulomb.eng.ohio-state.edu>
> Date: Wednesday, April 01, 1998 12:46 PM
> Subject: More Projection stuff
>
> >Ok, I probably shouldn't have, but I just ordered the Holley, 502-20,
>
> >open loop, TBI system (its' the digital version of the old analog
> >system).  I'm hoping to use it as a base for some experiments I've
> been
> >thinking about.  I also hope to use it as a learning tool.
> >
> >Questions:
> >1.  What is the difference between the "502-20" and the 4Di ECM?
>
> You got the analog system, just some dials to twist to calibrate it.
> The digitial is the 504 series...
>
> >2.  Is there a way to make a PC interface for the 502-20 like the 4Di
>
> No tables, nothing to look at, sept buy a o-scope adapter, and look
> at pulse lenghts.
>
> >3.  Anybody have any interesting bits of information on this system?
> >
> >Other comments are welcome.
>
> Sounds like ya got something crossed on numbers of discription,
> my book says 502-20 Analog.   504 digitial
>
> >Thanks,
> >
> >FEF
>
> No worries mate
> Bruce