I would get the turbo, DSMLink (so you can actually control fuel!), 255, at least 750's, wideband, and add on parts from there (probably exhaust, fmic, etc). I would not waste my money on EGT (espeically with DSMLink where you can monitor knock realtime, or on logs. Why get a sick setup (and an Evo 3, manifold, 3" exhaust, fmic, etc is a sick street setup. Don't skimp out on the things that matter (fuel/timing control, fuel pump, etc) to get a big fmic. That's only asking for trouble. If you are going to do it, do it right the first time!