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DW400 - Deatschwerks' Highest Flowing In-Tank Fuel Pump Available

 

Over the past 7 years Deatschwerks has grown their fuel pump line to include 12 unique models which provide a wide variety of flow and fitment options.  However, the ever increasing power outputs of today’s aftermarket engines have created the need for a new in-tank pump with flow capabilities beyond anything currently available. Deatschwerks is anwering that call with the release of the DW400 in-tank pump. 

The development of a 400+ LPH pump in a footprint small enough for in-tank use is a significant engineering feat. To ensure success, Deatschwerks turned to Bosch Automotive Aftermarket to find a solution. DW and Bosch have a long standing relationship which has resulted in several fuel injector products. The DW400 represents the first collaborative fuel pump product. The pump is manufactured by Bosch in Germany. Final QA, packaging, and sales are performed by DW in Oklahoma City, OK.

The DW400 surpasses the 400LPH benchmark by delivering an industry leading in-tank flow of 415LPH at 40psi. Even more importantly, the DW400 delivers 31% more flow than its nearest competitor, the Walbro 450 "e85", at pressures between 70 and 100 psi.  

The DW400 has a 46mm diameter and is compatible with pump gas, e85, and race fuels. The pump is also compatible with pulse width modulated pump drivers. The pump ships with a universal fitment kit which includes fuel hose, clamps, electrical harness, and filter. As with all DW products, the pump is warrantied for 3-yrs to the original purchaser. 

 

 

Keep it Simple

Anyone who has experience in building high horsepower cars has learned the value of simplicity. The K.I.S.S. method is well established in the high-performance aftermarket and applies to fuel systems just as much, if not more, than other aspects of a performance build. The gold standard of simplicity is a single in-tank fuel pump. A single in-tank pump is less complicated, less expensive, lighter weight, quieter, and more reliable than any other fuel delivery method. For all these reasons the team at DW are big fans of keeping the pump in the tank. There is one drawback, however… there is a limit to the power a single in-tank pump can support.  With the release of the DW400 pump, this limit has just been raised!

 

 

High Flow at High Pressure

The DW400 is the highest flowing brushed in-tank pump on the market.  But the flowrate of 500LPH at 0psi and 415LPH at 40psi only tells part of the story. Much more important than high-flow at low pressure is a pump’s ability to hold on to that flow under high loads of fuel pressure and boost pressure. The pressure range of 70-100 psi is where modern boosted EFI engines make their peak power and thus need their pumps to perform at their best. Since the DW400 was engineered with this in mind, it was no surprise that it significantly outperformed the benchmarked Walbro 450 “e85”. During side-by-side comparisons, the DW400 did flow 5% more at 40 psi, but more meaningfully, flowed an average of 31% more in the 70-100 psi range.  

 

Fitment

All this performance is packaged into a 46mm body which will fit into many OE aftermarket pump modules.  The 46mm body is a 16% smaller footprint than the Walbro 450 “e85” 55mm bell bottom.  However, it is also a 7mm diameter increase from a standard 39mm pump.  Therefore, modifications may be needed to fit the pump into OE modules.  The DW400 includes a universal install kit containing a filter, electrical harness, hose, and clamps.

 

Additional Considerations

  • Wiring – A 400+ LPH pump draws substantial current (16-20 amps at typical operating pressures). Make sure your chassis wiring is up to the task of delivering this much current. A DW hardwire kit (part number FPHWK) is an inexpensive insurance policy.
  • Size – The DW400 is a 46mm diameter pump.  Standard in-tank pumps are 39mm diameter. Modifications to the fuel pump module will be necessary on some applications.
  • Universal Fitment – Unlike other DW in-tank pumps, the DW400 is not an application-specific fitment pump. 
  • Check-valve – the DW400 does not have in internal check valve. An in-line check valve may be necessary for easy engine starts in some applications.

 

 

 

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Comments
BoboTheMonkey
BoboTheMonkeylink
Sunday, October 29, 2017 3:05 PM
I have really like DW products and would buy them again for sure! My Walbro pump died after about 4 months, leaving me to change a fuel pump in the parking lot at work, which was awesome. You have to pay Walbro half the cost of a new pump to even have them look at it for warranty... Also, the Deatschwerks pump I had(whatever the 255lph one is called) was possibly half as loud as the Walbro pump.
JR
JRlink
Monday, October 30, 2017 6:18 AM
Sounds like you may have got a bad walbro pump if it was loud. The 255's are some of the quietest in-tank pumps on the market that can flow that kind of volume.

This DW pump seems great compared to the walbro 415 (485). I'm nervous on DW wiring kit though. A walbro 485 has shown a pull of 26-28 amps at "Full song" and high pressure, so a 10 ga wire should be used. I notice the DW wiring kit comes with 15 feet of 12 ga wire. Interesting......
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