EVIL ENERGY Adjustable Fuel Pressure Regulator 5-12 PSI – 6AN Bypass Return For Carburetor With Gauge & Fittings, Red

If you’re dialing in a carbureted engine and need precise fuel control, this EVIL ENERGY regulator has you covered.

It’s adjustable from 5 to 12 PSI, so you can fine-tune the pressure to match your setup—whether it’s a street cruiser, a weekend racer, or something in between.

The body is machined from 6061-T6 aluminum, so it’s light but tough, and it handles gasoline, diesel, E85, and alcohol/ethanol blends without issues (just don’t use nylon braided lines with E85).

The kit comes complete: regulator, pressure gauge, mounting bracket, three 3/8” NPT to -6AN fittings, plugs, Allen key, sealant tape, and screws—basically everything you need except the fuel line itself.

It features two feed ports and one return port, plus a 1/8” NPT port for the gauge.

Installation is pretty straightforward, but definitely use thread sealant on the NPT ports and take your time to get it right.

Professional install is recommended if you’re not confident, but this is a solid upgrade for anyone looking to get their fuel system dialed.