I'm running a stock EFI unit on my Cortina, and need to upgrade the fuel pressure regulator.
Instillation has 12 psi of blower pressure, and normal fuel pressure standard is 32 to 42psi via a stock XF EFI Bosch fuel pressure regulator.
For 12 psi of boost, the fuel pressure should go up the stock fuel pressure, plus anywhere between 1 to 12 times the boost pressure. Most supercharged vehicles do about 8 times the boost ratio on top of the stock fuel pressure.
If you have a 6 psi turbo, stock EFI fuel pressure goes up from the stock amount, plus 6*12. That's 42+72, or 114 psi. With 12 psi boost, its 186 psi.
Everyone with EFI turbos and superchargers looks to be using set rate Sard or Maltaplasi, or these,
the Vortec FMU .
Anyone here tell me what I should use?
Instillation has 12 psi of blower pressure, and normal fuel pressure standard is 32 to 42psi via a stock XF EFI Bosch fuel pressure regulator.
For 12 psi of boost, the fuel pressure should go up the stock fuel pressure, plus anywhere between 1 to 12 times the boost pressure. Most supercharged vehicles do about 8 times the boost ratio on top of the stock fuel pressure.
If you have a 6 psi turbo, stock EFI fuel pressure goes up from the stock amount, plus 6*12. That's 42+72, or 114 psi. With 12 psi boost, its 186 psi.
Everyone with EFI turbos and superchargers looks to be using set rate Sard or Maltaplasi, or these,

Anyone here tell me what I should use?