Pass the vinegar for the chips please

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Thu, 16 May 1996, Dave Lawson wrote:

> Start with the stock code which RDH posted and scale from there. For the
> MAC02 code update you will indeed need an EPROM programmer, these run
> around <$150 and can be found in the back of Embedded Systems
> Programming magazine, along with some TMS2532 EPROMS. As for
> zener or EPROM, that depends if you are a hardware weneie or software
> wennie.

OK, I have a programmer, and two spare chips (in addition to the 
original) and I have an eraser, and I have installed a chip socket in 
the MAC-11b, so I can make as many chips as necessary 
to tune it in.  I am not a software weenie though, so I still don't know 
which bits of data to change.  I dump the code from the chip in the 
MAC-11b, and all I see is hex numbers all over the place.  Can someone 
give me a little tutorial (private email I suspect would be the order of 
the day:-) on how to figure out where this stuff is?

> For an implementation question on the 5000/200 turbo cars, why doesn't
> anyone reprogram the ECU to make the wastegate frequency valve work
> for you in raising the boost pressure? Kinda like the HKS EVC, only it is
> standard equipment in all these cars. All that needs to happen is to use it
> in the correct manner.

Exactly!  I still see one small problem in that the stock pressure sensor 
is only good for 2 bars.  How about we get a new pressure sensor that is 
good for 5 bars, and use that.  Then, assuming the collective knowledge 
is enough to figure out where all the maps are, we could reprogram the 
maps, and get any boost we want, any ignition timing , adn for those with 
the '91 200, and S4s, you could also get any fuel volume you want.  I 
guess it's all a metter of the right software tools.  I am not sure I 
have them yet.

Later,								
Graydon D. Stuckey								
graydon@apollo.gmi.edu								
Flint, Michigan   USA
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II