There's a LOT of great info out there on this, let me start by answering some of your q's:
1-EvoScan for logging and EcuFlash for editing maps and flashing them to the ECU
2-what size injectors? It's not hard, but it's not 'easy'. Just takes some time.
3-easy. the scalings are already figured out for ya and easily available. If you use a pre-fab'd tephra rom, you can use my howto:
http://mitsustyle.com/forums/showthread.php?t=25189
4-nothing, just have to tune for it.
5-Yup, use a GM BCS. I've been using one for years. You can even control boost directly based on your AEM MAP sensor, with error correction
There is a mountain of info, but having some tuning experience already you have your feet wet enough it shouldn't overwelm ya. The most important thread I can point you to is this one:
http://forums.evolutionm.net/ecuflas...dsm-works.html
Without getting to crazy, let's start there. Once you get the ecu in and running, you can do a lot of other things, like wire a wideband directly into the ecu, and of course all of the tephra mod options. I know jrohner has an evo8 ecu in his 2G, maybe he can answer some q's too.
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