OK, my setup used modded 50mm bodies, new fuel rail and a custom vacuum rail, fibreglass plenum (this was the bulk of the work and a real pita), 3" MAF, 24lb injectors, M3 IAT sensor, 76mm K+N, S14 throttle clip, veedub aux air valve controlled by MS , and prob a load more stuff I've forgotten.
For management I used Msns-e with wasted spark on the factory coilpack, and MAF, not Alpha-N or MAP unlike most with MS. Many reasons for this, not worth getting into here. Mapping with a wideband took the best part of 6 months, and still in traffic (esp coming off throttle), warmup and idle my MS setup is not proving as good as the factory motronic; i do run a performance inlet cam which doesn't help I guess.
I used m44 timing map for reference and as the basemap for timing. Fuel economy on motorway runs and in traffic is about the same as with motronic/standard inlet, contrary to what some people will tell you regarding big throttle bodies and driving in traffic. I cruise at 17:1 and on WOT use 13:1, hasn't been optimised on the rollers yet. I'm actually back on the standard inlet and motronic (with budget mods to make it work with the 2.1!) for the moment, weighing up whether to keep the ITBs or not.
When I built them the car was mainly a toy and MS was great, whereas now i'm doing a lot of miles in traffic and on the motorway where the factory injection and throttle are actually better than the ITBs (quieter at 85mph+ and smoother in traffic/better idle). Most of my problems lie with me not being as happy with MS as with motronic for daily use, not with the ITBs themselves, which worked great. throttle pedal feel was a bit vague compared to the standard setup, but the throttle reponse, noise, and the power delivery esp at higher rpms was brilliant.
Will find some more recent pics when I get a moment, here are some old ones.
