I have a 2000 ranger 4.0 ohv. When going to hook up my fmu, what do the 3 lines go to? 2 bigger lines on the front and a smaller line in the back. Help much appreciated.

If you have a stock returnless fuel system (98+), an FMU won't work - it is for return type fuel systems and connects to the return line.


Bird

Thomas knight said I still need to use one. He's sending me a schematic. Maybe that might clear things up. I don 't know.

Uh... I wouldnt take much of what Thomas Knight has to say for gospel.

This ought to be good...

for a returnless fuel system you could use one of these
http://216.242.145.16/products/product.phtml?p=32
its made specifically for returnless systems but requires an additional pump to supply the extra fuel

he sent me the schematic or picture, whichever you want to call it. It does use an additional in-line fuel pump which I have. Appearantly you have to install this inline fuel pump and before it, you use a tee and branch off to one of the legs in on the fmu and after the pump, you use another tee and branch off into the other leg of the fmu. Then on the back side of the fmu, you run a line for vacuum pressure.

Well, lets say I'm going to do this. I have to tap into my steel fuel line and put this pump in. Which adapter do I use to go from the steel line to I think 3/8 or 5/16 rubber gas line. Then after the pump, I need to go from the rubber gas line back to the steel line and that runs through my engine compartment.

With this in-line pump. Do I put it before the fuel filter or after the fuel filter. If I put it after, do i need to put another fuel filter in? I have another fuel filter, just need to know if I need to use it or not and is there a specific distance away from the pump that the filter has to go?

The pump only requires ground and 12v ignition right?

I want to hook up my boost gauge and tee off for my fmu and I was told to tap into the lower intake manifold? Is there another place or better place to do this? Pictures would really be great on this one.

That's not going to work. An FMU works be restricting the flow of fuel on the return fuel line, thus upping the fuel pressure at the rail. The best I can tell from your description, all it's going to do is restrict the fuel flow to the fuel rail. Low fuel pressure, and boost, it's not going to be pretty.

Fuel Management Unit (vacuum for fmu not shown)
______| |_____
| |
engine | in line pump |
______<--________|___|\\\\\\| ___|________<--___________| Fuel pump in tank|
Tee Tee

I still don't get it. That picture makes no sense to me.

nothing comes out right. Looked right when I typed it up. Disregard what you see. Maybe I can get a real picture.

For you guys with supercharged applications. You all use that returnless fmu posted in the url above?

What if I use the stock fuel system and put the supercharger on without any fmu or in line fuel pump, would everything run right? I'm running low boost (like 4 pounds).
Could I just upgrade the fuel pump in the tank and not have to deal with the in line pump and fmu?

I'm running larger injectors and a custom tuned chip. Just adding in a larger fuel pump isn't going to richen up your fuel mixture at all. You still need to figure out a way to richen things up.

I second Wed on upgrading injectors and a fuel pump. I don't have an FMU in my setup and my A/F ratio is safe.

Dosent the pic in Brains write up pretty much answer his question or am I missing something? Im now expert thou... :givemebee
http://i5.photobucket.com/albums/y173/backyard2/FUELSETUP.jpg

I second Wed on upgrading injectors and a fuel pump. I don't have an FMU in my setup and my A/F ratio is safe.

So how is the pressure raised? Please list your set up in detail cause Im in the same phase as he is but I was going to go the X caliber II route after I talk to doug to see if just a bigger Maf, 24lbs inj. and a bigger in tank pump would work for max of 8psi on a S/C 4.0 ohv. I think theres a way to use the stock pcm to control the fuel line pressure if Im reading other posts right.

I don't get fueling through pressure, it's though volume. I'm running a 190lph in tank pump and a vortech t-rex 155lph inline pump. The MAF I have is calibrated for 24# injectors also.

Admittedly, I still have the stock computer so the programming is on the conservative side as far as timing, and fueling isn't optimal for power at all points in the power curve but the fuel system keeps up just fine under full boost (7psi)/WOT.

So if in theory your fuel is metered by how much air goes through the the MAF and adds fuel by air flow through the meter? If you run 24lbs inj. are you running rich under none boost? I can see how that might work but as you said with a chip and a tunner it could really be a good setup huh.
Heres a sanareo, what if you got a MAF meter and inj off a ford car/truck that has them would they be a poor mans way of doing it?

http://us.f502.mail.yahoo.com/ym/ShowLetter?MsgId=9479_247158_56805_1400_28141_0_12 087_41643_2321799627&Idx=5&YY=56127&inc=25&order=down&sort=date&pos=0&view=a&head=b&box=Inbox

that above doesn't work. I'm trying to figure out how to post pictures. This is pretty gay. I've done it before but the same options aren't available this time. My diagram is different from the one above. Let me keep on trying.

On my 2000 ranger, I have a steel fuel line. How do the rest of you guys add an in-line pump. On my pump, it uses rubber hose connections. I was talking to some guys and they said that On a fuel injected vehicle, I'm running around like 35-40 pounds of pressure in the fuel line. They weren't for sure but they said that the rubber lines will split and I really shouldn't do it. But why would the pump have connections to slide a rubber hose over it? What do you guys think? And if I were to do this, I would have to cut the steel fuel line and Do I just slide the rubber hose over it and use a clamp or do I need a special fitting? Please help me out.
Thanks,
Craig