Hacking/tuning the jeep ecm

[Alioth]

The SBEC2 in the pre-OBD2 4.0 HO also acts as a TCU and as a stone age body control module. You like your power door locks (y/n)? You have to retain it on some level, even if it does not control the engine any longer, or else rewire the entire vehicle. This means the odd 8v volt Chrysler triggering pattern needs to be retained, too, for AT vehicles. Transmission control is relatively straightforward if AT as the AW4 is the A340x in Toyota products (Supra/Taco) is whatever Volvo called their flavor of the Aisin-Warner slushbox. If push comes to shove, the AW4 is easily controlled... I don't have the link handy, but one guy on the Jeep forums set his up push button style a la Edsel. :P

B&G can tune the SBEC2, they have screenshots of Tunerpro on their website. Gut feeling says they took some of the turbo Dodge ECU knowledge, and were kicked info from one of the large tuning companies that decided not to pursue older vehicles. http://www.bgperformancepcm.com/

I'd like to tune the stock SBEC2, personally. The 411 PCM is also cool, but there's something elegant about not having to invent cam/crank pickups. MS1/MS2 is a your mileage may - and will - vary proposition.