I’ve been looking more at the ms3 gold box but also became aware of the terminator x setup which would you say is an easier setup to run? Also if I plan on running boost in the future would one be better than the other?
Terminator X is self tuning - basically just hook everything up, punch a couple buttons on the initial setup, and away you go. It's for the chevy guys who like bolt on stuff (not that theres anything wrong with that)
the MS3 gold box is basically just an MS3X - in a fancy case and better connector than the DB37 - but functionally the same. The Gold Box requires you to tune as you go - they are set up to get the engine to fire but then you have to go from there... Now - that being said - you can tune your maps to exactly what you want and Tunerstudio does have a target function on tuning where you set the desired spark and fuel ratio targets and it will auto-adjust and tune to get there... a little more involved than the Holley system
I chose the MS3X because I wanted to learn something while I built my car, it's open source so I can expand on it as I see fit, and it is repairable if something happens. If there's a problem with the Holley you gotta send it back to them so they can fix their proprietary stuff.
Running boost - either system is capable of it - both can run on corn (E85) if you add a flex fuel sensor, and both are expandable -- Holley makes some cool stuff that works with their other cool stuff --- the MS3 can be made to work with other companies cool stuff - - it honesly comes down to preference. If you want a big name product that has millions of $$$ in R/D then go with the Holley and pay the price. If you're OK with a functionally the same thing with less pinash - the MS3 can do pretty much everything the Holley can.