DWR1000c AFPR Kit: Gauge and Fitting Setup Guide

Quick answer

Mount the DWR1000c AFPR with its gauge port accessible, plumb the 8AN feed and 6AN return fittings to match your lines, then set base fuel pressure with the pump running and the engine off. Treat the gauge as a tuning tool, not a permanent dash display.

DWR1000c AFPR install steps

1. Mount the regulator with gauge access: Choose a location where the gauge port faces a readable angle and the adjustment screw is reachable with a wrench. Use the supplied bracket or a secure mount; do not hang the regulator from the hoses. Check that you can see the gauge and turn the adjuster before you cut or tighten any line.
2. Match the 8AN feed and 6AN return fittings to your lines: Confirm your feed line uses 8AN hose ends and your return uses 6AN. The kit includes two 8AN feed and one 6AN return fitting, so plan the routing before assembly. Use a thread sealant only on tapered pipe threads, never on AN flare faces. Dry-fit every connection by hand first; a cross-threaded AN fitting will not seal and is easy to miss under pressure.
3. Plumb feed and return in the correct direction: Connect the feed to the regulator inlet and the return to the outlet, following the port markings or supplied instructions. Keep the return line free of kinks and avoid low spots that trap air. If the regulator has no visible port markings, stop and confirm the flow direction with DeatschWerks before pressurizing.
4. Install the gauge and bleed the system: Thread the gauge into its port finger-tight, then snug it with a wrench on the gauge body, not the lens. Prime the pump and check for leaks at every fitting before running the engine. A gauge that reads zero with the pump running usually means trapped air or a closed valve, not a bad gauge.
5. Set base fuel pressure with the engine off: With the pump running and the engine off, loosen the adjuster locknut and turn the screw until the gauge shows your target base pressure. Tighten the locknut without letting the screw move. Record the gauge reading and the screw position so you can return to base pressure after tuning.
6. Recheck after the first heat cycle: Run the engine to operating temperature, shut it off, and inspect every fitting and the gauge port for weeping. Recheck base pressure once the system is cold. A fitting that seeps when hot but looks dry when cold still needs attention; retorque or reseal it before driving.

Product facts

• DWR1000c AFPR + pressure gauge + 6AN & 8AN fittings: DWR1000c adjustable fuel pressure regulator with pressure gauge and (2) 8AN feed and (1) 6AN return fittings, anodized black. The included gauge and fittings mean you can plumb and set base pressure without sourcing separate pieces, provided your lines match 8AN feed and 6AN return.