I have the TCM2000 and its pretty awesome. There is a bit of a learning curve, but you get out of it what you put into it. I have mine dialed in pretty damned well and from the driver's seat you'd be hard pressed to tell it wasn't an OE installation.

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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

Yes but you were did a trans retrofit which I may also opt for in my stock 107. You had to plug and dial in. I just want to plug change gear ratio and play.

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To see my 129 parts for sale visit:
http://stores.ebay.com/The-Mercedes-SL-Store
John Roncallo