Just put on the piping yourself, install the ECU yourself, and just leave them the tune. That's gonna be the cheapest route. If you've got a dremel, a cutoff wheel, and a lot of time, you don't need the shop.I'm installing everything myself. My plan was to do the trans swap and everything with that and then put on all the turbo stuff and then tow my car to the shop have them put on the piping and then have then do the ecu and tune it.
Remember, measure twice, cut once.
The Hondata you're getting is a standalone, correct? I think you'll still need a conversion harness, if it doesn't come with one.