Adjustable Fuel Pressure Regulator w/ Gauge - M20/M30

Each

K-Tuned Adjustable Fuel Pressure Regulator - JDM Honda Parts USA

Ashcroft 15-W-1005-H-01B-100# Ashcroft Type 1005 Commercial

AEM Universal Black Adjustable Fuel Pressure Regulator

Holley Performance 12-804 Fuel Pressure Regulator

Fuel Pressure Regulators · Winners Circle

File:Nissan Skyline R34, Tomei fuel pressure gauge.jpg - Wikimedia

AEM High Capacity Universal Black Adjustable Fuel Pressure Regulator

Fuel Pressure Regulator Gauge Rail B16 B18 B20 B-Series Honda

Where to adjust fuel pressure, on regulated return or on pump