Holley P/N 512-505 User Manual

Holley Control panel

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P/N 512-505

The Holley SUPERCHARGER REGULATOR (SR) is a supplemental fuel pressure regulator
designed to increase the fuel pressure on supercharged engines during boost conditions. A
Supercharger Regulator is used on supercharged engines as a method to maintain a safe air-fuel
ratio during boost without the need for larger injectors or ECU recalibration. It is designed to work in
conjunction with the stock regulator. The stock regulator controls fuel system pressure when the
manifold vacuum is present. When boost occurs, the SR increases fuel pressures as the manifold
boost increases


NOTE: You, the installer, must read completely through these installation instructions

BEFORE you begin installation and carefully follow the instructions. Failure to do so
may result in product/system and/or engine failure.