New Aeromotive 13130 Compact EFI return style fuel regulator with fittings and fuel pressure gauge. P/N 13130 Compact EFI Regulator and Fitting Kit Includes. 13129 EFI return style Regulator. (1) 15633 Pressure Gauge. Base pressure adjustable from 30-70 psi. Fuel pressure rises on a 1:1 ratio with boost. Provides (2) ORB-06 inlet/outet ports and (1) ORB-06 return port. 1/8” NPT gauge port. Vacuum boost port. CNC-Machined 6061 T6 billet aluminum construction. Stainless steel mounting bracket. 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 those looking for a cleaner, lighter solution where performance is critical or where space is a premium.