[s-cars] IA vs MTM

[Robert Pastore]

There is no flash tecnology in these the UR-s motronic (as there is in the
new cars.)   The chips physically need to be desoldered, erased &
reprogrammed -- or just swapped out for others, and then resoldered to the
board.  Most tuners solder a socket to the ECU board, then the eprom just
pressed into the socket. This makes subsequent chip swaps are quick and
easy, and also keeps the soldering heat off of the chips.   Ned solders the
chips right back into the board (saving the $2x2 = $4) in sockets, and at
least *USED TO* use some kind of epoxy or silicone caulk to glue the chip to
the board.  This is a huge PITA if you ever want to remove your chips and
makes it very easy to damage your ECU if you try without the right tools.
One of the two eproms used is rather rare and out of production, so I think
Ned is smart to save them instead of giving them back where they will
clutter your house,  eventually to be thrown away by your wife when she
clean the junk drawer.


Bob



-----Original Message-----
From: chris chambers [mailto:fastscirocco_2000 at yahoo.com]
Sent: Wednesday, June 19, 2002 11:26 AM
To: Dave Forgie; s-car-list at audifans.com
Subject: Re: [s-cars] IA vs MTM


I do not know if Ned reprograms the chips on the
board, or what. But I did ask him if our OEM chips
could be returned to us with the ECU and he said no.
He re-uses them to help keep costs down.

Chris


--- Dave Forgie <forgied at direct.ca> wrote:
> S-gruppees:  One other consideration for the IA vs
> MTM vs Lehmann
> debate:  I believe Ned reprograms the original chips
> on the ECU (i.e. he
> does not add sockets and new chips).  I believe the
> others to supply
> actual chips and add sockets.  As a result, IF you
> wanted to go back to
> OEM chips after running the new software (why you
> would do this, I don't
> know), you could with the MTM or Lehmann.  IA - I
> don't know how that
> could be done.
>
> Dave (chipless on the sidelines) Forgie
>
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=====
93 Audi S4
91 Mitsubishi Eclipse GSX
85 VW Scirocco 2.0 not stock :-)
73 Porsche 914 2.0 (67,000 original miles)


It's not how much you make, but how much you don't spend!

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