The EZL does have a MAP sensor, and its the main load input for the ignition map. The 104.980 actually has CAN communication with the EZL and MAP gets bussed over to the CIS.

The 104.980 is infamous for awful throttle response off idle. In stock form while running the AC they wont pull off from a stop until they kick down into 1st gear. As you get up in RPM a bit, they're fine, but if you punch it at idle they tend to bog pretty bad.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff