View Full Version : external fuel pressure regulator
03-01-2011, 02:21 PM
well i have found some post on here about it, but i really was wanting to know what are the exact fittings that i need to use on my truck. also what do you do with the regulator thats part of the tbi. thanks fellas.
If you aren't going to get crazy with the pressure, you can just put the external regulator on the return side and leave the stock regulator alone. I have a 60psi pump, so I opted to make a block-off plate. Made it with a piece of steel and cut a gasket from rubber-fiber fual-rated gasket paper (from napa it's grey).
At JEGS, the kit with both TBI fittings is the 4th line down on this page: JEGS Fuel Injection Fittings (http://www.jegs.com/p/JEGS/JEGS-Fuel-Injection-Fittings/1287062/10002/-1). P/N 555-103105K You only need the 16mm o-ring fitting if you leave the supply line alone.
I currently have my regulator back by my tank with the return port from TBI blocked with a M12x1.25 (or whatever it is) bolt. There's more than one way to plumb it up, a lot of guys will say what I did is wrong, but there are plenty of guys on here that don't have a return from the TBI with no significant issues.
Ultimately I am giong to get some braided stainless hoses ($50 from midwest hose) and fittings for the fuel filter, and then move the regulator to the return side. ATM, I just have it spliced up with goodyear high pressure fuel hose and hose clamps, regulator mounted to the frame in front of my tank.
03-03-2011, 06:59 PM
How often do you really need to change your pressure.... Figure out your HP and see what you need for injectors. Set it and leave it alone.
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