extralargenog

iTrader: (1)

Mech setup would be SWEET.

Gold DA9

Getting it done. Patiently waiting on these results too.

Zer0_SpeedWorks

iTrader: (1)

good stuff!

in for results

96civic cr-v

In for results

0em_at_kfi

I've been getting lots of e-mails and pm's about testing pumps lately.... I apologize if I haven't gotten back to you, but it appears as though we're going to be testing plenty of pumps in the near future.

I've had several questions about how we test pumps, test fluid, controllers, etc. So to clear the air, so to speak:

We perform fuel pump testing with a test solvent similar to gasoline. The specific gravity is .72 at 60 degree Fahrenheit. We maintain the fuel temperature near 70 degrees F.

The fuel supply is filtered and is kept clean.

When testing submersible pumps, an auxiliary tank is utilized. This tank is supplied fuel via a transfer pump and a 10 micron filter. The submersible pump then feeds back into a main tank while in operation. A gate valve controls the pressure head on the return side of the flow meter. Pressure is monitored directly at the pump outlet.

We utilize a Sorensen DC power supply with regulated voltage and amperage controls. Voltage to the pump is monitored via a Fluke VOM directly connected to the pump terminals to account for any drop in the wiring.

Most electric fuel pump tests are performed with taper tube flow meters that are calibrated via "dead weight" measurement.

0em_at_kfi

$650 - $930 mech. pump
$100 - $300 surge tank
$250 - - - - B-series cam drive kit, if you don't have a B: drive off dry sump or belt drive
$100 - - - - Walbro 255

Gold DA9

almost forgot about this... any new updates?

0em_at_kfi

Aeromotive's new in-tank pumps won't be available until the end of this month (Jan 11).

That's all I got.

Gold DA9

Have you recieved the DW pump yet from locash to test it?

Blown90hatcH

Ball park time from when received to when posting test results?

0em_at_kfi

"Have you recieved the DW pump yet from locash to test it? "

Negative.



"Ball park time from when received to when posting test results? "

Probably a day or two after we get some...

locash

What's actually funny is that neither the Aeromotive or the DW pump are available for people to buy anyway. I've done my best to track down pumps and send them off for testing, on my dime, is anyone else willing to do the same?

tepid1

Did you check with jayracing?

0em_at_kfi

I think everyone is in the same boat.

MARKET! MARKET! MARKET! MARKET!
then wait to get a feel for actual interest and decide on how many to order.

And that's nothing new in this industry, "big" manufacturers do it all the time actually.
I just think when it's too premature, it hurts more than it helps.

0Deatschwerks

Our pumps should be available within the next couple weeks.

Over the last couple months, we have distributed almost 100 pumps to our dealer/installer network to get into cars and do some real-world testing.

We've already completed in-house flow testing (we've flowed 100,000s injectors, so it is a concept we are familiar with and have perfected the method of finding and recording accurate measurements) and we have received similar results from our anonymous 3rd party testing completed by RC Engineering of the DW301 and Walbro 255HP.

MA Performance made 100whp more on their shop's "Winter Beater" on E85 just from swapping out a Walbro GSS342 for a DW301.

Cobb Tuning has put one in a '04 STi and made an extra 30hp and 30tq with just a change of pump from the Walbro Pump allowing them to run another 3psi boost.



This is not a product that we are just throwing out to market. That is not how we do things here at DW.

Garage 808 Hatch

So was the 255 maxed out on the Subi? 30hp is not a big marketing point.

tepid1

How'd you change a fuel pump and do a pull all within the same min?

0Deatschwerks

So you don't have to go to another site (and possibly register), this is the post COBB made giving their account of the install in both a '04 STi and '09 WRX

Location: COBB Tuning Surgeline
Ambient Temp: 67 °F Daily Average
Elevation: Approximately Sea Level
Weather: Indoor

2004 Subaru STi
Tuner: Tim Bailey
Dyno Info: Mustang AWD-500
Peak HP at RPM: 438 WHP@6570RPM
Peak Torque at RPM: 399 WTQ@5050RPM
Baseline hp/tq for a stock on same dyno: 2010 STi: 239 WTQ, 228 WHP
Target Boost: 24 PSI
Target AFR: 11.5:1
Fuel: Pump 92 Octane

Engine/Power Modifications:YouTube - 438 WHP/399 FT/LBS- 2004 Subaru STi- COBB Tuning Surgeline



The new Deatschwerks 300 fuel pump provides more fuel delivery and power potential with drop in walbro-like fitment
We recently had the opportunity to test some new fuel drop in fitment fuel pumps from Deatschwerks. These pumps are reported to flow up to 25% more than the popular walbro 255 and do so without any major mechanical changes to the fuel pump assembly.

We tested these pumps on two separate cars. The first example is a relatively high HP tune on an 04 STi. This car was equipped with DW850cc injectors.

In the first series of tests we tuned the car with a walbro 255 installed (blue below). With this pump in place we were able to make a little over 400 whp but we were running out of fuel at higher RPMs. You can see this in the graphs below.


Lack of fuel with a walbro 255 despite high IDC limited power
The lower power torque and boost numbers were done with the walbro 255 installed. We could not run any more boost because we could not deliver enough fuel at higher RPMs.


You can see from the graph below that the AF in the walbro 255 configuration ran leaner than desired and did so with very high injector duty cycle. Because of this condition we were limited to ~400 whp on this particular walbro 255 pump.


The lack of fuel with a walbro 255 produced a drop in fuel pressure at higher RPM
This particular car was equipped with a fuel pressure gauge. We were able to observe a coincident drop in fuel pressure and leaner AF with higher RPM despite high injector duty cycle. This clearly shows this car was running at the edge of the fuel pump capacity.

More fuel delivery with a DW300 pump allows more power with lower injector duty
When the car was tuned again with a new Deatschwerks 300 fuel pump we were able to run MORE boost with richer AF ratios AND LOWER injector duty cycle. Because of this we were able to get the most out of a very capable cosworth motor/35r setup. Fuel pressure was also rock solid with NO drop off at higher RPM.

Second example - Deatschwerks 300 fuel pump delivers fuel for high HP ethanol applications

As a second example demonstrating the potential of this new pump we installed a test unit on a 2009 wrx equipped with DW1300cc injectors a 35r turbo and E85 fuel. Because E85 requires ~30% more fuel volume at a comparable power to pump fuel this setup would normally be limited in power with a single walbro 255 installed. We stopped adding power with this particular car because its still a STOCK motor. :D But, the tune was in no way fuel limited.





In fact, we were using 85% of a 1300cc injector and making this power with a completely linear (not fuel delivery limited) Injector duty cycle. So, this pump is capable of supplying 1100 cc min or 265 liters per hour at 22 psi. Clearly there is still more on the table and it has already exceeded the flow capacity of a walbro 255.

ahobbs

Im standing in line waiting for DW to come out or aero. Willing to pay in advanced for my dual setup

Garage 808 Hatch

ill sell you a 2035 hobbs. on the cheap

locash

The Weldon 2035 is what I am putting in my car anyway, I just wanted to see what these pumps could do, before recommending them to my customers. Rather than believe every manufacturers claims, I decided to take the time and money to have the stuff independently tested..

ahobbs

no

Garage 808 Hatch

lol

Blown90hatcH

Did you actually send any of these 100ish pumps to reputable Honda/Acura dealers/installers? And dare I even ask if you are talking about vendors that will only sell the pumps? I am all up for product testing and showing results but want to see real world, relevant testing done.

Magic y0!

locash

We know you arent standing in line, you're sitting in the fire truck in the drive thru line at Subway. I have an idea for you though, I'll talk to you about it soon..