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Old 11-09-2005, 09:49 AM   #1
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Question Return Style Fuel System

I have been doing some thinking and I came up with an idea for a return style fuel system and wanted some other peoples input.

My stock fuel rail has been drilled, tapped, and fit with a sending unit to monitor rail pressure.

Would it be possible to take out the sensor, put in a T fitting, check valve (if needed) and run a return line to the tank and have a functioning return style fuel system for the Focus??


If this would work could it help with fuel supply problems in the higher boost applications?


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Old 11-09-2005, 04:28 PM   #2
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Nope , Nope and Nope

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Old 11-09-2005, 06:21 PM   #3
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Quote:
Originally posted by 1turbofocus
Nope , Nope and Nope

Tom
Crap! Crap! and Crap!

Oh well...... just a thought
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Old 11-09-2005, 07:28 PM   #4
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Wait, do we see a fuel cell in your future?
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Old 11-09-2005, 08:21 PM   #5
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y wont it work?

all you have to do is tel the ecu.

we had a focus with a return line system in florida.

just want to learn
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Old 11-09-2005, 09:37 PM   #6
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JSSVT04 and here all this time from listening to you i thought you knew it all

It isnt as easy as "all you have to do is tel the ecu. "Much more needs to be done to make it work correct and safely

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Old 11-09-2005, 10:59 PM   #7
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first you would have to tell the computer to provide a constant fuel pressure, always the same pressure. then you would need to customize the fuel rail so that you could have a vacuum controlled fuel pressure regulator on it. then fabricate your return line to go back to your tank, and make up some way to attach it to the tank without screwing up certain emmissions sensors on the fuel tank. that only covers the mechanical changes needed to run a return style fuel system. the computer then needs to be retuned for the new fuel pressure ratings, and the injector pulse width modified based on the new fuel pressure. I think that's pretty much all the basics. not worth the time or money IMO. besides, why would you want to run your fuel pump at a higher pressure than you actually need, just so you can bleed off some pressure? are you trying to burn out your fuel pump early?
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Old 11-10-2005, 07:05 AM   #8
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well if i was going to do a return i wouldnt use the stock pumps. i think they are going to be small.

i can get anything made. i have a c&c machine next door. so i can get all that made. it is not hard to run a line to back to the tank, but drilling the hole will be a little challenge.the stock injectors are not going to be used

well i dont think i'm going to use my ecu much longer (i'm going to trying something)

im not scared to try something new or different. i want people to show off these cars. just think about it. look how old these cars are and we have a mag already, and it took mustang like 15 - 20 yrs to get there's hahah. that show you how these cars are growing. just something to talk about.
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Old 11-10-2005, 08:44 AM   #9
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There has been return fuel systems on the Focus and working for 3 years now , it can be done but isnt needed for less than 350HP at the wheels

Why wouldnt you keep using your stock ECU there isnt anything out there better , you would be backing up

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Old 11-10-2005, 09:17 AM   #10
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350 really hmmm thx i need that info.

i'm talkin to people about something to put inplace of the ecu.
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