Fuel Rail + Fuel Upgrade FAQs

Which Fuel Rail Should I Choose?
If you're using stock injectors, we recommend the BARB fuel rail.

Can I keep rubber hose fuel lines in my engine bay?
Absolutely! You just need to purchase our ORB8 to 5/16 Barb Fitting (you'll need two of them).

What size and thread type are the inlet and outlet?
Our fuel rails come with an 8 ORB (8AN with O-Ring) inlet and outlet.

Can I keep my cold start injector when switching to your fuel rail?
Yes, you can! Our fuel rail has a central port (ORB6) that can be used for a cold start injector with the ORB6 to 5/16 Fitting. The middle port can also serve as a return line, while the opposite end of the fuel rail can be capped with the ORB8 plug included in the kit. This port can alternatively be used for a fuel pressure gauge.

Can I retain my OEM Fuel Pressure Regulator?
You can, but we don't recommend it. It’s quite a hassle to make a custom bracket for either the rail or the engine bay. We suggest using the Deatshcwerks FRB-1002 Compact instead.

I have a standalone ECU. What type of rail and injectors should I use?
If you're running a tunable EFI system, such as a standalone or piggyback ECU, be sure to consult your ECU manufacturer first. Some systems can accommodate both low and high impedance injectors, but most aftermarket systems are compatible with high impedance injectors.

Why do I need injector adapters for my stock intake with O-ring fuel rails?
The stock intake manifold was designed for "pintle cap" injectors, and the seat isn’t deep enough for modern injectors. Injector adapters allow for a deeper seat, ensuring a proper O-ring seal. Additionally, our fuel rail brackets are designed to accommodate the height of the adapters.

What impedance are your injectors?
Most of our injectors are high impedance.

What is the required height for injectors on 14mm fuel rails?
For 14mm fuel rails, you’ll need injectors that are 64mm in height (standard tall).