Haven’t done much to it lately. I swapped out the electric fan setup for a Ford dual fan and wired it to a PWM controller and my Megasquirt which has a new fan controller upgrade that works great. Re: the turbos it’s hard to say. I never tried to max out either. Both make great power. The 78/75 I’d say id the better of the two. It spools quicker than the GT45, pulls hard up to 15psi (that’s as high as I’ve gone and with an overly rich tune) and it’s just an overall lighter and smaller package which is a big deal when your building the plumbing and trying to fit everything between your fenders.
