Aeromotive Bypass Fuel Pressure Regulator EFI Bypass Regulator. This EFI Bypass Regulator encompasses features and benefits only found on Aeromotive regulators and in a new smaller and lighter package. Capable of supporting applications up to 1000 HP, the 13129 EFI Bypass Regulator can handle high-flow EFI fuel pumps and the most aggressive street machines; especially […]