The MAP sensor is hard to see in the pic, but its the little plastic box zip tied to the wire harness just to the left of the oil fill. THe IAT is tapped into the manifold on the bottom side, behind the blower.
The SMT-7 came with innadequate wiring instruction for the S2 (different DME), and I had to go to .pdf versions of the factory service manual wiring diagrams. The SMT-7 instructions DID however have pretty good info on tracking down what goes to what. The hardest part was figuring out how the timing component work (hall sensor on cam, and crank position sensor on flywheel: use the flywheel sensor) and which way they get wired to the piggyback.
The software is pretty intuitive with maps for fuel, timing, auxilary controls for an extra injector (I think I'll add water injection down the road), and a whole slew of setpoint features that I haven't began to play with. The whole reason I picked the SMT-7 over the SMT-6 was the ability to tune with a wideband, and use a closed loop system. I tuned the car by having a friend ride shotgun with a laptop and dial in the AFR for the correct boost level and RPM, and dial out some ignition timing to keep it from pinging. Aggressive acceleration is dialed in pretty good, but easy acceleration needs some more work.
As far as boost levels go, I don't have a mechanical gauge in the car, but from what the MAP sensor is telling me, I'm seeing about 5lbs with my foot to the floor (I need to fab a new bell-crank for the throttle because it only opens about 85%) I ordered a pulley from pulleyboys.com and had them modify one so the offset was correct. I believe its around 3.5" dia, I calculated it to be about 6lbs.