The Fuelab FLB-515 EFI adjustable fuel pressure regulator uses a large-seat design for robust flow in electronic fuel injection systems. Adjustable from 25–90 psi, it features two -10AN inlets and one -6AN return for common EFI plumbing arrangements. Marketed as a universal EFI regulator, it helps maintain steady fuel pressure across varied injector and pump setups without complicated modifications.
Fuelab 515 EFI Adjustable FPR Large Seat 25-90 PSI (2) -10AN In (1) -6AN Return - Red