As built my controller should be able to work on any system that uses a single oxygen sensor. That pretty much excludes most if not all of the LH-SFI stuff, possibly not on some of the early ones, maybe. Interfacing with the mass air flow meter signal is the generally accepted way to tune most EFI. I built the controller to give us CIS cars a way to alter the mixture.

So far I've got around 1k mi on the car with the controller in charge of the O2 signal. So far so good.

My buddys SL is an 84 500 Euro block with the 560 crank rods and pistons.

There is no basic adjustment on a US spec LH-SFI. There are a few ways you could hack it but nothing simple.

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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