Hey guys,
Well here is the question, am I going to need 3 Y splitters for my fuel system?

Here is the what im planning on using, a Aeromotive A1000 pump, feeding through a -10an braided SS line to a Aeromotive A1000 injected bypass FPR, then leaving the FPR going to a Y splitter (feed), then into 2 -8an feeds to each fuel rail. From there the returns from the rails need to goto another Y splitter, and then that return line will go into another Y splitter from the FPR return...

I know thats really hard to follow so I drew a really crappy picture. Just let me know if theres a better way of doing this...



Dan_s_young

 

ummm... no
http://fc3spro.com/TECH/MODS/FUEL/fsystem.htm

ReTed FTW

 

What the.... What kind of fuel pressure regulator has 2 inlets and a return?

NVM just realized the FPR im looking at is just like that...

Maybe this is a stupid question, but wouldn't you want the regulator before the fuel rails in order to control the pressure before the fuel travels to the fuel rails? Or is that just in carburated setups? I understand the fact that fuel isn't going to come out of the injector if the pressure is too high, but I didn't realize the regulator could be positioned like that...

Hmmm thanks alot that picture helped alot!

 

um... no. if thats the case, the fuel after the regulator will have shitty presure. think about it like this. think about a sprinler on your lawn. if the water was simply let out the back, it wouldnt hardly come out. but if you put a cap on afer the sprinkler, it has pressure. is that an ok reference? it has to be after everythin, it presurises the fuel before it, not after the regulator.

 

Ok thanks for explaining it like that, makes alot more sense. As you can tell im new to setting up a fuel injection system like this... I appreciate the help!

 

Yea the FPR has to maintain equal pressure throughout the system, and the only way to achieve that is being at the back of the lunchline...

 

Yes, carbs can get away with the FPR "upstream" of the carb.
Due to the carb fuel pump and the low, low pressures the carb runs at, it's possible.
You can run the carb FPR "downstream" of the carb (and this is the superior design), but this gets messy and added complexity...and not necessary.

Fuel injectors systems requires you to run the EFI FPR downstream of the fuel rails.
If not, fuel pressure at the fuel rail fluctuate too much, and this is very bad.
EFI FPR's require an added hose to run the bypass fuel back to the fuel tank.


-Ted

 

by doing this what is the advantage over stock? is it getting more of a flow? etc...