Hey fella's, interesting I just came across your post. I'm just going through a similar dilemma regarding this topic. I've installed the Walbro 460 pod on my XR6T BA Ute & will be running 1000cc injectors BUT thoughts on the fuel pressure regulator? I see some stay with the standard 4bar others replace it with a 3.3bar or other? I'm unsure of the facts behind the theory... if anyone can explain, that be appreciated? I do assume it has something to do with using E85 & 98... or larger injectors requiring more/less? The old one I pulled out of mine was a 4bar... but which shall I replace it with after the fuel mods... thoughts?
tx ;-)