1984 – 1987 Turbo Buick Adjustable Fuel Pressure Regulator. This kit replaces your factory, non-adjustable fuel pressure regulator with a fully adjustable piece. Now you can fine tune fuel pressure for maximum engine power output and performance. All 100% billet construction This regulator features a Viton 3-layer diaphragm rated at 100 psi constant and 300 […]