"Josh Battles" <josh.lists@omg-stfu.com> wrote:
: On Thu, February 23, 2006 10:35 am, jon@dakota-truck.net wrote:
:>
:> given the extra power of the big block.) If you were to do
:> this swap, I think you could probably expect to gut the dash
:> and build your own gauge panel, 'cause almost none of the
:> gauges, indicator lights, etc. will work without the computer.
: I was thinking about this recently for another project. I wonder if there's
: a way to setup the MS to feed a minimal stream of data back to the factory
: PCM so all the gauges will work. When I bring a vehicle in for an emissions
: test, they take a snapshot of the computer through the OBDII port. If I were
: to use the MS to run the motor and piggyback the stock electronics on top of
: everything I could (in theory) run whatever I wanted and still pass as long
: as no codes were set.
I think maybe the route to take in that case would be a standalone
unit that can simulate the OBD-II port. By the time you design and
build all the interfaces between the MS and the factory PCM, you could
probably build such a simulator yourself. :-) That's assuming of course
that piggybacking the stock computer onto the MS would even work. I'm
wondering about things like the O2 sensors for example. I don't know
if the stock PCM will purposely richen up and lean out the mixture in
order to test the O2 sensor, but even if it doesn't, chances are it
will fall out of sync with what the MS is doing, and I've got to
think that you'd be throwing codes all the time for things like that
where the stock PCM is trying to modify things but it can't.
If you're looking to use the stock gauges, the way to go there
might be to tie into the separate bus for the gauges (pretend to
be the stock computer), but I'm sure that's proprietary and would
be a major hassle. Another route to keep a stock look would be
to take apart some autometer gauges or something and mount them
behind the cluster to run the stock needles. Of course, neither
of those solutions solves the OBD-II scan issue.
--
-Jon-
.- Jon Steiger --- jon@dakota-truck.net or jon@jonsteiger.com -.
| 67 Dodge Coronet, 70 Plymouth Barracuda, 76 Peugeot TSA |
| 78 Dodge B100, 90 Dodge Dakota Convertible, 92 Dodge Ram 4x4 |
| 96 Dodge Dakota, 96 Suzuki Intruder 1400, 96 Kolb FireFly |
| 99 Jeep Cherokee 4x4, 01 Dodge Ram 3500 CTD |
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