Do I need a boost referenced regulator for EFI?

Discussion in 'Forced Induction Mopar' started by pishta, Feb 11, 2018.

  1. pishta

    pishta I know I'm right....

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    turbo TBI project. Do I need a boost referenced fuel pressure regulator? Im planning on running stock 360 TBI on a 273 @ <9psi. Fuel pressure will be 14-20psi for TBI. Ill run a 48psi inline pump with a 14 psi regulator/return line to the TB. do I need to have the regulator increase the fuel pressure to the TBI under boost?
     
  2. T56MaxTorq

    T56MaxTorq Well-Known Member

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    I don’t see why you wouldn’t. If you have 14 psi fuel pressure and have 9 psi boost, your effective fuel pressure will be 5psi. That boost pressure is always trying to push that fuel back to the tank. Not what you want to happen when you need an extra rich fuel mix.
     
  3. 67Dart273

    67Dart273 Well-Known Member

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    Yup. Needs to be referenced
     
  4. coreyg

    coreyg Well-Known Member

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    yes usually its a 1 to 1 rising, so every 1psi of boost is 1lb of pressure