DW's Vehicle-Specific fuel rails offer higher flow, more plumbing options, and several unique features that go beyond what is currently available in the market. Quality, Performance, and Flexibility are what the customer has asked for, and DW has delivered...
Quality - DW fuel rails are CNC’d from billet T6061 aluminum and hard anodized in a black finish. The new DW rails were designed with integrated CNC brackets; less expensive bolt-on brackets save money but lack stiffness and precision. In addition, DW engineers invested significant design time removing excess material to shave weight and create a sleek signature look resulting in a rail that looks as good as it performs.
Performance - DW fuel rails outflow the competition with -8AN ORB inlets and outlets utilizing bore diameters that exceed AN spec by 80%. In addition, only DW rails feature bottom-mount 3/8” NPT ports for low-profile fuel pulsation damper integration – which decrease noise and pressure fluctuations in dead-headed and returnless configurations.
Flexibility - DW fuel rails are engineered for use in both return and returnless configurations. This flexibility allows you to buy once and buy right, future-proofing your rails for build stages yet to come. The DW rails also feature 1/8” NPT top ports and 3/8” NPT bottom ports which allow integration points for nitrous, pressure gauges, fuel pulsation dampers, and other rail accessories. A Schrader Valve is included with each set for easy and accurate fuel pressure data logging during tuning sessions.
DW rails are offered in multiple kit options to meet your needs… rails, rails + crossover, rails + plumbing kits, or rails + plumbing kits + injectors.
DW offers innovative Subaru rail/injector kits for converting side-feed applications to top-feed. Many performance vehicles manufactured between 1991 and 2006 came from the factory with side feed injectors. Modern top-feed injectors are easier to tune, less expensive, and flow more fuel than the side-feed alternatives. DW Conversion Kits include injectors ranging from 750cc to 2200cc and are engineered as a system where the injector, rails, and mounting hardware all work together to integrate flawlessly into the OE manifold and mounting points.
Most Comprehensive Offering
Fuel injectors are not a one-size-fits-all type of product. The right fuel injector must combine the elements of fitment, coil impedance, flow rate, and tuning data into one injector specific to your engine's needs. This is a lot to ask an injector line up consisting of only a handful of options. DW has the most comprehensive injector offering in the industry so we will ALWAYS have what you are looking for...
Automotive application specific injectors
Power sports application specific injectors
Universal line of Low Impedance up to 1800cc
Universal Bosch EV14 up to 2200cc
Sidefeed Injectors up to 1000cc
Gasoline Direct Injectors up to 1700cc
For popular models, DW's application-specific approach makes shopping a simple 3 step process…
The right tool, used incorrectly, yields substandard results at best. Fuel injectors follow this same universal law. Proper data is required for proper tuning. All DW injectors are fully characterized in-house via SAE J1832 standards. Injector data is available in General Characterization Summaries and Application Specific formats. Using the data is easy. Often it is cut and paste from the DW excel sheet to the tuning software.
Development of accurate injector data is a complex process, but there are no shortcuts to a proper calibration. DW has developed specially designed and calibrated flow benches utilizing digital flow meters, which are required to measure the precise fuel mass needed for proper characterizations. The data acquisition process consists of collecting over 450 data points per injector part number. These data points cover pulse widths, pressures, and voltages that the injectors will experience once installed in your engine. The collected data is statically analyzed, scrubbed and formatted into a General Characterization Summary. This Summary can then be formatted into application-specific formats for different makes, models, and tuning platforms. The application specific data is then in-car optimized by one of our tuning partners.
Dynamic Flow Matching
Quality injectors mated to proper calibration data will still perform poorly as a system if the injector set is not properly flow matched. The DW dynamic flow matching process ensures each set works together as a system to fuel your engine properly. Fuel injectors do not operate in a static state so why test them in a static state? In the engine, fuel injectors are a very dynamic component, constantly changing frequencies and pulse widths to precisely deliver the fuel needed. The DW multi-point dynamic flow testing process mimics these conditions by testing at multiple pulse widths within each of the ranges below…
Low Range (1-2 milliseconds) – Low pulse widths are used during idle, light throttle cruising, and deceleration. However, expensive electronic flow meters are required for accurate testing in this range so few companies actually balance their injectors this low. Low pulse width balancing is crucial for a smooth idle on large injectors.
Transitional Range (2-4 milliseconds) – The transitional range covers the pulse widths that typically make up the non-linear range of injectors. Although most DW injectors are linear well into the low pw range, transitional balance is important because many high flow injectors spend a majority of time in this range.
Linear Range (4-10+ milliseconds) – The linear range pulse widths are used during medium and high load conditions. Proper balancing in this range allows for advanced timing and increased boost pressure to yield higher and safer peak horsepower.
Static Flow - Many companies that balance their injectors only test at static flow. In the engine, injectors do not operate at a static state. However, the static rate is still considered the “call-size” of the injector.
I have run quite a few Hoosier R7's but wanted the size available in the 888R's for my new BRZ. For one thing, I had forgotten how noisy they are! I could live with that if they performed better on a dry track.
When pushed hard for 20+ minutes they eventually build up enough heat to start getting greasy and losing grip.
For many they will be adequate for track days, but I drive my cars too close to the limit. A better tire for me in the dry has been the Eagle Supercar F1 3R's.
Unfortunately the belt did not fit, it was was too long, my fruend had a 2018 SRT, he had the same problem with his order.
The transaction process was easy, the belt seems like good quality, too bad it didn't fit