I'm thinking of doing a return system install myself instead of paying a shop for labor. Only problem is trailering it after install for a tune. I know coyote guys lock the fuel pressure regulator at 48 without boost reference, with the same injectors and don't need a tune to account for it. Can I do the same thing if I lock the regulator to 42.8 or whatever pressure it is for 2v's? If anyone knows if I can please let me know, thank you