How to Megasquirt your 3G Hemi
Technically you could pull the MAP sensor off of the board on any of the models and mount it remotely if you really wanted, but I agree it's a hassle and a bit of a goofy setup to run a vacuum line to the computer, especially if you have it mounted inside like you typically should on the older boxes. I haven't looked at their latest offerings, but it sounds like they've stepped things up quite a bit to a more professional looking setup. Mine mostly disappears since it's hidden behind the dash, though I left the power board on the front of the heater box so it was easy to get to wiring, relays, and fuses.
Edit: Wow, just read over some of the new stuff. I'm going to have to hook my computer back up and see about loading the latest firmware and playing with stuff again. I had gotten to the point where it was running good and didn't want to mess with it, but with all the features they keep adding I may have to think again. Almost makes me want to get one of the new sealed setups to replace my old MS2.