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Fuel System Upgrade

Discussion in 'N54' started by Sshec152, Nov 19, 2016.

  1. Sshec152

    Sshec152 Corporal

    Over the winter i will be installing my JPWORKZ 6266 kit, VRSF 7.5" intercooler, VRSF 3.5" exhaust, and Docrace intake manifold with port injection looking to be around 700-750whp. The only thing im unsure of at this point is fueling. I will be running full e85 and know i need the ******* stage 3 lpfp. Will i need to convert to a full return fuel system at this point or just upgrade the stock line? Also what injectors will be needed for port injection, since the Docrace manifold does not include them.
  2. doublespaces

    doublespaces Administrator

    2009 E93 335i
    I dont think a return system is necessary at that power. That is what I've heard anyway.
  3. Sshec152

    Sshec152 Corporal

    That brings me to my next question, at what point is it necessary? I plan on going for more in the future so I'd rather just do it once if i can.
  4. doublespaces

    doublespaces Administrator

    2009 E93 335i
  5. Bigdaddyaaron

    Bigdaddyaaron Corporal

    I'd sell that 7" for their race intercooler that's on sale right now. That 7" does not manage heat well at higher single turbo boost.
  6. Sshec152

    Sshec152 Corporal

    I have the 7.5" monster race intercooler
  7. AD-ENG

    AD-ENG Specialist Vendor

    A return style system is never needed with the stock fuel configuration.

    If you are running twin Walbros in the tank and stock intank lines there is no benefit to a return type system. In fact, it is more harmful if you don't know what you're doing.
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