Best current price£221.56from Demon Tweeks
Shopping.co.uk recommended and popular offers
Demon Tweeks£221.56Visit shop Fuelab High Flow Fuel Pressure Regulator (515xx Series) - 25-90 Psi Pressure Range -6 Inlet Ports In Black - Black
Visit shop11 offers from £221.56 - £240.64
View price history by clicking the chart icon.
This Fuelab High Pressure EFI Fuel Regulator is designed for performance enthusiasts and builders needing precise fuel delivery for high-horsepower EFI applications. Its key benefit is the highly adjustable and stable fuel pressure control, crucial for optimal engine performance. A potential caveat is the need for compatible AN fittings for installation. This regulator features a billet aluminum body, a fine-pitch adjustment screw for precise tuning, and multiple inlet/outlet ports for versatile system integration. It is compatible with a wide range of fuels and includes provisions for a fuel pressure gauge.
| Model Part Number | 51501-1 |
|---|---|
| Brand | Fuelab |
This specific model is designed for high-pressure EFI applications, typically ranging up to 90 PSI, though exact ranges can vary by specific part number within the 515xx series.
This model features two -10 AN (JIC) inlet ports and one -6 AN (JIC) outlet port.
Yes, this Fuelab regulator is compatible with petrol, diesel, methanol, and ethanol fuels.
No, the regulator includes a 1/8 NPT port where you can install a fuel pressure gauge, but the gauge itself is not included.
Fuel pressure is adjusted by turning the fine-pitch threaded adjuster cap. Clockwise rotation increases pressure, and counter-clockwise rotation decreases pressure.
The 'Forever Fixed' warranty is Fuelab's lifetime warranty that covers the original purchaser against all material or workmanship defects.
For EFI applications, connecting a vacuum/boost reference line to the regulator is highly recommended to maintain consistent fuel pressure relative to manifold pressure, especially under varying engine loads.
Check for air leaks in the vacuum/boost reference line. Ensure the fuel pump is adequate for the system's demand. Verify that the fuel filter is clean and not restrictive. Make sure the regulator adjustment is secure and not vibrating loose.
Ensure the fuel pump is capable of producing higher pressures. Check for restrictions in the fuel lines or filter. Verify the vacuum/boost reference line is connected correctly and to a source that provides adequate signal. Confirm adjustment screw is turned correctly (clockwise to increase).
Inspect all AN fittings and ensure they are properly tightened. Check the sealing surface of the adjustment cap and reference port for damage. If leaks persist, contact customer support.
This is often normal if the regulator is referencing manifold vacuum. As engine load increases and vacuum drops, fuel pressure will rise relative to base pressure. Confirm base pressure setting with the engine off or under steady load without vacuum/boost reference.
Setup:
Compatibility:
Care:
