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Power Strokes
6.0 Aftermarket
Fuel setup?
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[QUOTE="Strictly Diesel, post: 805769, member: 1411"] Our Regulated Return does a few things: 1. Moves the pressure regulator to AFTER all of the pressure drop (fuel filter, fuel lines, sharp turns, banjo bolts) and demand (fuel injectors). This results in the pressure at the regulator being a much better representation of what the pressure in the fuel rail is. 2. Upgrades the fuel line size (increased flow capability) from the filter bowl to the heads. 3. Upgrades the banjo bolts to significantly higher flowing units (less pressure drop). 4. Replaces the tiny stock (or blue) regulator spring and poppet with a regulator that can operate more accurately (less chance of leakage past the regulator). As for the tunes, if the current tunes are asking for more fuel, than the demand on the fuel system will be higher...more fuel will be passing through the injectors and into the cylinder...so the pressure drop will be higher. Again, I can't guarantee that with almost 200k on the clock, you don't have a pump that is tiring. My recommendation of staying with that stock fuel pump from Ford still stands...IF you decide to go that route. There are 4 possible outcomes here: 1. You replace the pump and the pressure drop is fixed. This tells us that the pump you have was moving significantly less fuel than it should have been. What I described above for the fuel system work still applies...the regulator is not located properly and you could improve the system with our RRK. 2. You replace the pump and nothing changes. This tells us that the pump was not the problem and I'm correct about the stock pressure management setup. Install our RRK and your fuel system will be good to go. 3. You install our RRK and your pressures are back to where they are supposed to be. This confirms everything I've said above, but still doesn't guarantee that your 187k mile pump is perfect and it may still need to be replaced at some point when it doesn't want to run any longer. 4. You install our RRK and nothing changes. This confirms that your pump is already too far gone and needs to be replaced. Once the pump is replaced, your fuel system will be good to go for a very long time. Hope that helps. [/QUOTE]
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