Okay so I'm going to turbo my 420 and I'm pretty much planning out all my parts to make this as painless as possible. However, I stumbled onto a question or two.

-When I go turbo, I'll need to buy an FMU (since I don't plan on tuning it, only 8psi stock). I read that it's pretty much a secondary FPR, if so, why can't I just buy an aftermarket FPR and set the fuel pressure myself and call it a day?

Numero 2

-Fuel cut defender. Is this necessary? Isn't that what missing link is for?