You will have more then enough pressure with the vortec pump. Then start tuning like Dave Says. Yes the FPR you listed will work with your tbi, but you can take the one on your throttle body and make it adjustable. There’s plenty of videos and pictorials that address it. Not overly difficult.
Last edited by TriumphR3; 10-14-2022 at 11:04 PM.
I've had that jet adjustable fpr for years, backed all the way off my fuel pressure is still 15.5 psi. I think I have the same injectors you're talking about as well, I remember seeing 90lbs on rockauto. I don't think they flow anywhere near that but I may have other issues. According to the BPC spreadsheet I should use a setting of 95 or so, but that was forcing my VE table into the 100-teens or higher. I've been forced to bump my bpc all the way to 140 to keep my VE table under 100. Im running 16-17 psi with those injectors on a vortec headed 385. Again I may have other issues but the most logical to me is that those injectors are not 90lbs. Yes i've upgraded my fuel pump. Curious how this turns out for you.
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