Rebuilt my bowl and the stock spring with 300k miles was pretty rusty. Added the riffraff billet lid and gold spring. Sits at 72-73 psi at idle at the bowl.

Engine: 7.3 PS w/5 speed manual had fuel psi readings as low as 45 psi at highway speeds. After installing the blue spring the psi readings are 75 to 80 psi at highway speeds. Right where they should be.

Easy to install good o rings no complaints!

Improve fuel consumption

The best

Nice kit ans easy install

Thank you RiffRaff for including the O-ring and the rubber sleeve; mine was disintegrating as I removed the return line. Installed the gold spring and definitely notice that the truck is running smoother and quieter. I did sprout a small leak at my drain valve though so definitely keep in mind, increasing the pressure will certainly find any seals or O-rings that are not in good shape. Thankfully RiffRaff has the fuel bowl kit which is next up for me.

Was super easy to install both O-rings were correct. My stock spring still had tension but was a little too short. Truck runs good. Can’t tell the difference but at least I know it’s in there.

Simple install- truck idled smother & seemed to run quiet. happy with purchase!