I recently finished my EFI conversion on my 71 bronco. I installed an 87 302 with a High Output fuel injection system off of a mustang. Now I am just working out all the bugs, I seem to be starving for fuel at mid range RPMs when accelerating. I only have a high pressure pump inline off of an 87 F150. I have read that for this to work properly I should install an accumulator before the High pressure pump with a low pressure pump to feed it. Has anyone else used this setup and does it work ok? also what type of low pressure pump did you use, I dont want my low pressure pump to choke out the high pressure pump, because it doesnt flow enough volume. Thanks for you help.

Mines been running fine w/just the high pressure pump for 14 years now, I do run a fuel cell with the pump mounted below it and drawing out of the bottom. Does your pump have to lift the fuel? If so then you may need the pusher.

Brewchief:D

I have the Wild horses 24 gallon tank with the pickup at the top of the tank so yeah it has to pick it up from the bottom of the tank.

I have a 86 bronco II with fuel injection and it has a stock low pressure pump in the tank and a high pressure pump inline. It works great for the V6, but I don't know about a V8. It might fit your tank?

I have been fighting fuel starvation problems for years with mine. just when i thought I would have all problems solved pumps would start to burn up. I have same efi setup and 23 gallon tank. have tried one hp pump, lp to accumilator to hp pump, 2 hp pumps in varius combos with lp pump and different accumilators etc and would work well at first then would start to burn out pumps. the singel hp pumps work very well if they feed off the bottom of the tank like in a fuel cell with a sump. just never could get it to work right with the 23 gallon tank since the bottom is so lo can't tap the tank at the bottom and put the pump lower because you would have to mount the pump on the axle.

gave up on the multiple pumps,accumilator etc and boughthe intank pump for 88-93 stang that comes with the bracket etc and plug. used the old sender plug cut down to fit the plug on the outside of unit for disconnectability. cut hole in tank and put it in. mine runs better than has ever run and no more longevity problems. clean setup,alot less stuff to clutter up. whole setup cost 100 bucks at vatozone. took me about 3 hours to do. I did have to cut part of the bracket the pump mounts on to make the pump sit lower in the tank.

moral of my story is. if your going to keep the 23 gal tank. put a pump in the tank and be done with it. the use the pump designed to run the efi system and will be happy. I have seen some people throw lots of money into pumps trying to get it right and the intank pump works like it should. if worried about problems changing pumps make an access pannel in the bed to get to so don't have to drop tank.

the inline pumps need to be fed fuel from the bottom of the tank or from a pusher pump like they orginally had it set up to be.

a intake pump is about the best if your wanting to keep your stock fuel tank. any good radiator shop that works on fuel tanks can cut a hole in your tank and braze on the top of a mustang tank or other thank that had a intank pump.

Have you ever run a Fuel pressure gauge?
I have a low PSI and a High PSI pump, and have no issues.
I would guess you eiher have something else wrong, a bad pump, or crap in your tank.

well my tank is brand new i bought it when I did the efi setup. The pump is very old, so I am going to buy a new one and then if it still does this I will put an in tank pump.

well turned out to be an easy fix. I didnt have a big enough vent line for the tank. and it was causing vapor lock. I went to fill up one day and when I unscrewed the cap it made a woosh sound. now problem is solved. and I even put an old PCV valve in line on the vent line to keep fuel from spilling in the event of a rollover. I Know im cheap, but Im saving for my link setup and coil overs, and every penny I save helps.