Fast Guppy’s Speed Shop


  • Sale
  • $271.95
  • Regular price $302.95
Shipping calculated at checkout.

This precision adjustable fuel metering regulator is the ultimate fuel pressure control unit designed to work on all naturally aspirated EFI, turbo and supercharged applications like vehicles that run in the Pro Street, Pro Import and Outlaw classes. This is a 2 port 1:1 boost compensating return style regulator that is adjustable from 15-65 PSI + boost reference and is designed to be used in conjunction with any electric EFI fuel pump. Features built in gauge port, mounting bracket, two AN -8 O-ring fittings and a AN-6 O-ring return fitting. Black anodized.


  • Black anodized
  • Easy installation
  • -8an & -6an o-ring style fittings included to adapt to steel braided fuel lines
  • Designed to regulate high fuel demands for naturally aspirated EFI, turbo, supercharged and nos race applications
  • Engineered to regulate extreme flow volumes generated by racing fuel systems
  • CNC machined billet aluminum
  • Allows adjustment from 15-65 psi + boost reference


Brand Holley
Color Hard Coat Anodized
Emission Code 4
Fuel System Gasoline
Inlet Size 8 AN O-Ring
Material Aluminum
Outlet Size 8 AN O-Ring
Pressure Range 15-65 PSI
Product Type EFI Part
Return Size 6 AN O-Ring
Style Bypass
Warranty Limited 90 Day
Part Number 512-504-5