Join Date: Sep 2010
Location: Dearborn, Mi
My Ride: Guess :-)
Engine: 4 General electric F101 (58,000 lb/f thrust)
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Re: Crazy SBEC-II Idea
If I am not mistaken, the wastegate selonoid is driven by pin-36 of the SBEC. On the 1993 4517652 REV E of the SBEC-II, pin 36 is driven by pin 1 of Z141. Z141 is Chrysler P/N 4517702. It is in a SIP-15 package, which is consistant with medium power/current driver ICs. This IC also drives SBEC pins 33 (Cruise Vaccum), 34 (A/C Clutch - via diode) ,35 (EGR Solenoid) ,36 (UNK) ,37 (UNK - via diode) ,51 (Auto shutdown - via diode), 52 (Evap purge selonoid), 53 (cruise vent).
I have the 2.5l TBI, 3.0l V-6, 3.3l V-6, and 5.2l V-8, and 5.9l V-8 versions of this SBEC-II board.
The 3.3l V-6 version appears to be the most populated. I have socketed a 3.3l V-6 version of this board and have loaded a 1993 2.5l TBI calibration into it. I am successfully running this set-up.
This spring, I will be burning the Mexican 2.5 MPFI calibration and loading it to the board. I will be adding the MPFI (Turbo) intake and turbo distributor, with the hall effect sensors (both cam and crank posisition) to the engine. I will be modifing the engine wiring harness to accomodate the extra three injectors, cam posisition sensor, as well as the 4-cyl coil pack (for future modification). I see no reason why this set-up will not work. If I can successfully locate and merge the coil pack driver code with the MPFI code, I will attempt to run the engine with the coil pack, and using the distributer only for the cam and crank data.
Here are the scans (non-digitized) versions of the board: