VAC Motorsports - Air & Fuel Delivery for BMW Performance Builds / Precision Fuel Pressure Control for BMW

Radium Engineering Direct Mount Regulator

Tue, 30 Nov 2021 12:56:26 GMT

Radium Engineering Direct Mount Regulator
Buy Now: ~~$149.95~~ $149.95

The Radium Direct Mount Regulator (DMR) is a compact high peformance adjustable EFI fuel pressure regulator designed with a unique highly versatile mounting system. It can be mounted directly to a compatible fuel rail port using the included 360 degree swiveling adapter, or mounted remotely away from the fuel rail. The compact size fits in areas with limited space, without sacrificing performance. This regulator is safe to use with E85 and other alternative fuels.

PORTS AND FITTINGS
The main inlet port on the regulator is female threaded for 6AN ORB. A swiveling double ended adapter (shown below) is included with the kit that allows the regulator to be used in any compatible 8AN ORB fuel rail port, such as those found Radium Engineering fuel rails. Other swivel adapters will be made available in the future. If mounting the regulator off-rail, other adapters can be screwed into this port on the regulator (sold separately HERE).

The return port on the bottom is threaded for 6AN ORB. The provided 90 degree 6AN male fuel return fitting (shown below) can swivel 360 degrees permitting a multitude of mounting configurations. Other adapter fittings can be installed in the return port if needed (sold separately).

Unlike the previous generation, this DMR has two 1/8" NPT side port locations that can be used with a pressure gauge, transducer, temperature probe, etc. Two 1/8" NPT plugs are provided.

Fuel pressure is dialed in using the preloaded set screw on top of the regulator.

Two interchangeable orifices are included with calculated flow diameters to match the fuel pump flow to the regulator. This permits the DMR to be used with practically any horsepower engine. Furthermore, this added precision will resist diaphragm flutter and optimize pressure stability. See the installation instructions for more details.

This design has been tested to regulate over 1,200 liters per hour (see MORE DETAILS tab).

NOTES:
1. Compatible with all gasoline and ethanol blends of fuel.
2. For a 3AN vacuum signal adapter fitting, CLICK HERE.
3. It is not uncommon for pressure to bleed down when the fuel pump is turned off. This is not a sign of a malfunctioning regulator.

WHATS INCLUDED

Part numbers 20-0623-00/-01 include only the parts shown in the photo below.

-Fuel Pressure Regulator (Black or Green Top)
-Swiveling Inlet Adapter Fitting (for 8AN ORB Fuel Rail)
-PTFE Impregenated 1/8" NPT Plugs (x2)
-6AN Male Swivel (for Return Line)
-Return Orifices (silver orifice pre-installed)

OPTIONS

ANODIZED COLOR

Select the anodized color of the direct mount regulator's CNC machined billet top.

ADD-ON: 20-0029 Fuel Pressure Gauge

Adding a fuel pressure gauge makes DMR pressure adjustments simple.

After applying PTFE paste or tape to the threads, the gauge will seal into either of the two 1/8" NPT ports on the DMR.
For more information on the fuel pressure gauge, click HERE.

ADD-ON: 20-0407 Fuel Pressure Gauge with 90deg Adapter

This kit includes a Radium pressure gauge with a 90 degree male/female 1/8NPT adapter. This allows more options when positioning the fuel pressure gauge.

Contents of kit 20-0407 are shown below:

ADD-ON: 20-0624 DMR, Remote Mount Adapter Kit

This kit includes a stainless steel mounting bracket for the DMR and alternative regulator inlet fittings. These allow the DMR to be mounted away from the fuel rail, like a standard aftermarket regulator.

Contents of the 20-0624 kit are shown in the photo below:

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Aeromotive Fuel Pressure Regulator Gauge

Wed, 15 Apr 2009 16:01:00 GMT

Aeromotive Fuel Pressure Regulator Gauge
Buy Now: $49.95

Aeromotive white faced, 0-100 PSI screw-in fuel pressure regulator gauge.

Compact, and mounts directly to the 1/8NPT port on most FPRs and fuel rails.

Accurate, consistent readings whether hot or cold.

Only 1.5 in diameter yet easy-to-read. Made of durable, rust-free stainless steel with shatterproof scratch-resistant composite plastic lens.

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VAC BMW E30 M3 Fuel Pressure Regulator Adapter

Thu, 24 Jul 2008 14:25:00 GMT

VAC BMW E30 M3 Fuel Pressure Regulator Adapter
Buy Now: $129.95

Modernize your classic BMW fuel system without replacing the factory fuel rail.

The VAC Motorsports Performance Fuel Pressure Regulator Adapter is designed to replace the factory early-style Bosch fuel pressure regulator with the aftermarket fuel pressure regulator of your choice. Whether you're restoring an aging fuel system, fine-tuning a naturally aspirated engine, or building a high-horsepower turbocharged application, this adapter provides the flexibility and precision today's performance engines demand.

Factory Bosch regulators served BMW enthusiasts well for decades, but modern engine builds often require more accurate fuel pressure control and greater tuning flexibility than the original equipment was designed to provide. By allowing the use of an aftermarket adjustable fuel pressure regulator, this adapter makes it easier to achieve consistent fuel delivery, stable air/fuel ratios, and repeatable engine performance.

For naturally aspirated engines, it's an excellent upgrade when optimizing fuel delivery for modifications such as camshafts, injectors, or engine management. On turbocharged and supercharged applications, precise fuel pressure becomes even more critical for maintaining consistent fueling under boost and maximizing engine reliability.

Engineered for a straightforward installation while retaining the factory-style fuel rail, the VAC adapter is an ideal solution for enthusiasts looking to combine proven BMW engineering with the performance and adjustability of today's aftermarket fuel system components.

Features & Benefits

Converts early-style Bosch fuel pressure regulators to aftermarket regulators
Retains the factory-style fuel rail
Allows precise fuel pressure adjustment
Improves tuning flexibility for modified engines
Supports naturally aspirated, supercharged, and turbocharged applications
Helps maintain consistent fuel pressure and air/fuel ratios
Simple, clean installation
CNC-machined for long-lasting durability
Designed and engineered by VAC Motorsports

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VAC Motorsports Performance Fuel Pressure Regulator Kit

Thu, 24 Jul 2008 13:33:00 GMT

VAC Motorsports Performance Fuel Pressure Regulator Kit
Buy Now: ~~$449.95~~ $399.95

This VAC Fuel Pressure Regulator Kit EB includes everything you need to equip your Early-model Bosch FPR on your BMW with the included modern, accurate, and robust Aeromotive FPR.

Regulating fuel pressure accurately at the rail is crucial for fine tuning and eliminating A/F ratio issues across the rev range- especially if your running high compression or running large amounts of boost.
The BMW factory FPRs when in working order function quite well, but when higher output or better atomization is needed from injectors, a performance FPR can help tune modded vehicles. This is a highly useful upgrade for the forced induction or very hard tuned vehicles.

VAC Tech Tips:
This is not a rising-rate FPR and is not intended for installing items such as turbochargers without antiquate ECU tuning. Fuel pressure regulators should be used to fine tune the output of injectors, not for gross changes in A/F ratios.

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Aeromotive Universal Compact Adjustable Fuel Pressure Regulator

Fri, 21 Sep 2007 06:10:00 GMT

Aeromotive Universal Compact Adjustable Fuel Pressure Regulator
Buy Now: $249.95

Superb pressure control and legendary durability is what Aeromotive is known for. The Aeromotive Compact EFI Regulator is designed for applications producing up to 1,000 HP and works great even where space is at a premium. It has the standard vacuum/boost reference port for rock solid 1:1 increase in fuel pressure.

Ideal for return style EFI fuel delivery systems which are limited to one regulator inlet port. This AFPR has a range of 30-70 PSI with the inlet and outlet both using #6 A/N Fittings. On the street and at the track, these pressure regulators have logged more miles, more laps and more passes than any other brand EFI regulators in the world.

Use this Adjustable FPR to help trim or increase flow from your injectors.

Ideal for dialing in exactly the amount of fuel you will need from your heavily tuned engine.

Requires A/N terminated fuel lines to be installed.

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