I posted this in off-topic discussions but not getting many bites, I don't want to use an aftermarket trans controller ($$$) and all i'm really looking for is links, websites, forum posts etc to get more data since I've searched for hours all over the web and come up pretty short handed except for some fella in Eastern Europe MSing his 98 Volvo...
Background: My buddy and I installed a MS-I, v3.0 on our XR4Ti track car so I am familiar w/MS, building one, hooking it up to all the sensors, and tuning it, on a non-OBD vehicle. The XR4Ti is street legal (Passes GA-smog tailpipe sniff test).
New Project: I would like to install a MS on my 1998 Cadillac Eldorado and be able to retain all of the normal ECU functions like automatic trans shift, gaugues, etc for track use (I know it was never meant to go road racing but hey it's not my DD, just my toy and I'd like to have a backup HPDE for when/if the XR4Ti is down or being driven by one of my teammates, also I'd like to use it as a test mule) which means I need to prevent the ECU from killing my engine/trans when I decouple some of the sensor returns. I'm pretty sure this can be accomplished by datalogging on the various signals and using various resistors on the return signals to keep everything in the green. Again, I do not care if it throws emissions check codes as this vehicle will not be used on-road as long as it doesn't do something stupid like throw the car into limp home mode or cut power, however if I am controlling fuel, timing, and spark there is very little possibility it will be able to go into limp home mode but rather I would expect it to cut power or something.
Currently: I have been going through my FSMs and am in the process of isolating each signal and the cross communications on the returns in the ECU so that I can figure out which ones I 'have' to have.
Questions: If anyone has any experience, links, or contact info on individuals running MS in parallel w/OBD-II era cars (particularly GM but any info will be helpful) again, mostly because I want to keep the stock trans and gauges, I would very much appreciate it. I really need to see setups or hear about experiences bypassing ECU return inputs to make sure I can minimize critical returns to keep the stock trans.
