So, getting ready to turbo my 99 Sierra and only thing I haven't sorted out yet is the fuel system.
It's got a 5.3 and I'm going with a gt45 turbo, flipped manifolds, fmic, 60lb injectors. That's it for now. Next spring I have another low mileage 5.3 I'll drop in with a cam and maybe heads/intake. Shooting for 500ish hp for now and possibly 600ish next year.
I can't seem to come up with a clear answer to the fuel system. What pump? Single or dual? Do I run a boost a pump? What about a boost referenced regulator?
Not new to cars or turbocharging just new to it on this platform. Looking for my best bang for the buck option. Was initially thinking aero motive or walboro 340 with a boost a pump but is that the best way to go? Thanks for the help in advance!

 

Regulator. Don't even consider boost a pump garbage. Single walbro 450 will get you to your goals.

 

Any particular regulator work better than another in our trucks?

 

I've always used aeromotive. Tried out several different ones, all work well.

 

The stock 99-02 fuel pressure regulator is vacuum/boost referenced. The ratio in boost isn't quite 1:1, but the tune compensates.

 

I have been as well as many others on the stock truck FPR. Seems to work fine for everyone for a long time. Yes get a new pump. Not the boost O crap

 

So single big walboro and I'm good to go? That's way easier than I expected and is the last piece in my puzzle.

 

Ah last question, not entirely fuel related, where can I get a 3 bar map?

 

The factory fpr on a 99 will handle the walbro 450?