Stage 3 fuel pump: DW300 vs Aeromotive Stealth 340 vs Walbro 255

[4ringAR]

Car has 152k on it, Frankenturbo F21 turbos CURRENTLY with JFonz "3F" tune Bosch 550cc injectors.

In the next couple weeks I will be putting RS4 intercoolers and an 85mm MAF, and getting a new tune to go with it. Target is 450whp.

Old fuel pump is old and tired, and will probably struggle to keep up at that power level, so Im looking into replacing it before too long. I will replace the filter at the same time.


The question is, which pump?

-Aeromotive Stealth 340 and Deatschwerks DW300 are the Same price, Aeromotive flows a bit more but both should flow more than enough for my car. Seems like more people use the DW300, but the Aeromotive Stealth is still pretty new to the market. Both seem to be good quality.

-The stage 3 go-to back in the day was the Walbro 255, why have people moved away from this? Its cheaper than the others, and it should still be up to the task, right?

-Bosch 044 wont fit in the allroad, more expensive anyways.

Survey Says....

[itguy]

the 300 or 340 pumps flow more than the 255, and are smaller.

[4ringAR]

So does the 255 not fit into the stock basket?

Obviously the Stealth 340 and DW300 flow more, but the question is "do I need that much flow or is the 255 sufficient?"

[itguy]

20psi pjk04 - 255 is fine. Anything more, I would suggest running a bigger pump.

[4ringAR]

So sounds like I should go with something bigger then, maybe.

Aeromotive 340 or DW300?


Anyone other opinions?

[bigern45]

i ran walbro 255 with my RS6's and EPL tune. worked perfectly for 3 years. 2.8-2.9 FATS but had decent upgrades/accessories all around.

[DxC]

cmon its all aobut the walbro 450 pump. it fits in the stock basket SO WELL, AND its only 160

[4ringAR]

cmon its all aobut the walbro 450 pump. it fits in the stock basket SO WELL, AND its only 160

I almost read that "it fits in the stock basket SO WELL" as sarcasm until I did a little search on it and saw a lot of A6 people running it. And yeah there is a seller on ebay selling them for only $135 shipped, seems like a good set up.

But it would be overkill for my set up though? Those guys are all running 500+whp or on E85 Im only planning for 450whp on 91 w/ meth. Would there be any negatives to running such an oversized pump?

http://www.audizine.com/forum/showth...o-450-E85-pump

[CELison]

I have a dw300 in my f21 car

[aysix]

But it would be overkill for my set up though? Those guys are all running 500+whp or on E85 Im only planning for 450whp on 91 w/ meth. Would there be any negatives to running such an oversized pump?

negatron

[philthyphil]

I almost read that "it fits in the stock basket SO WELL" as sarcasm until I did a little search on it and saw a lot of A6 people running it. And yeah there is a seller on ebay selling them for only $135 shipped, seems like a good set up.

But it would be overkill for my set up though? Those guys are all running 500+whp or on E85 Im only planning for 450whp on 91 w/ meth. Would there be any negatives to running such an oversized pump?

http://www.audizine.com/forum/showth...o-450-E85-pump

I'd be weary of buying a fuel pump on eBay. There are a lot of fakes on there. I'd spend a bit more and buy genuine.

[4ringAR]

Or what about the Walbro 400? Flows a bit less, but same size(actually shorter) and cheaper. Not rated for E85 but I dont plan to run E85

[bigern45]

I'd be weary of buying a fuel pump on eBay. There are a lot of fakes on there. I'd spend a bit more and buy genuine.

if it says "TI automotive" on the side then it is genuine....

walbro 400 and the other (450) is actually more similar than noted. tests were done and actual volume and pressure is extremely close.

[sherbet]

I have a dw300 in my f21 car

I have one in my K04 car.

its nice and quiet

[julex]

as in my email, get dw300 or stealth pump.

The problem with walbro 400 or E85 variant is that essentially require re-wiring of system to exploit their potential. They are very hungry pumps. I measured 1.4V drop at the pump at idle. I am afraid to even think what would the figure be when asked to pump at additional 30-40psi (10psi to match atmospheric plus whatever boost one is making). I determined on my set up that practical limit on stock wiring is around 425whp after which the pump just can't deliver due to low voltage at the terminals.

[airjawed]

as in my email, get dw300 or stealth pump.

The problem with walbro 400 or E85 variant is that essentially require re-wiring of system to exploit their potential. They are very hungry pumps. I measured 1.4V drop at the pump at idle. I am afraid to even think what would the figure be when asked to pump at additional 30-40psi (10psi to match atmospheric plus whatever boost one is making). I determined on my set up that practical limit on stock wiring is around 425whp after which the pump just can't deliver due to low voltage at the terminals.

I think my thoughts were the same. I looked at how much flow was required at peak psi...and then compared which seemed to pull less current and so I picked DW300 based on those calculations.

Here is the calculator page :http://www.deatschwerks.com/resources/fuel-calculators/

[bobkatkat]

Get dw300 or 340 stealth pump. Way, Way quieter than walbro. I have the 340 stealth.

[MetalMan]

Not in an S4, but I have the DW in my A4. Can't even hear the darn thing... in my car it's even quieter than the stock fuel pump.

[demonmk2]

I don't have a stage 3 s4 but I have been running an
aeromotive 340 on my BT a4 for over a year with no issues.
It came with a sleeve so it will fit in you FP basket.
Plus its quiet.

[dannyn424]

my walboro 400 is loud, but on the plus side their afordable and I know its working lol!!

[julex]

my walboro 400 is loud, but on the plus side their afordable and I know its working lol!!

?

walbro 400 is actually the quietest pump you can get as measured here and I agree. I could practically not hear it running with tank cover open, or extremely quietly rather, nothing one can ever heard inside or outside. Check the sound levels:

http://radiumauto.com/media/blog-pag...l-Pump-Test-73

[dannyn424]

maybe its stereo static... I noticed it when my 400 was installed. Ill check again tonight.....

[bobkatkat]

?

walbro 400 is actually the quietest pump you can get as measured here and I agree. I could practically not hear it running with tank cover open, or extremely quietly rather, nothing one can ever heard inside or outside. Check the sound levels:

http://radiumauto.com/media/blog-pag...l-Pump-Test-73

Thanks for the info! I wondered about this. I definitely will be replacing a 255 with the 400 on another non VAG car.

[OHS4]

I also have a dw300 in my stage two, semi easy to install, no problems, I paid 120 for it.

[8520]

In to see what you end up with. I'll be going stage 3 on my allroad next year and am still on the stock pump.

[4ringAR]

^^^Dre, Im honing in on the DW300, based on what Im reading. More people seem to have installed it than the Aeromotive and havent heard anything bad about it. Plus the DW300 seems to have less amp draw at the same line pressure than the Aeromotive---it flows slightly less at the same amperage, but it will still be more than enough for my setup.

I also have one in my stage two, semi easy to install no problems, I paid 120 for it.

Have which one? lol

[PinoyS4]

I have the aeromotive stealth from Sillyrabbit drop in and works perfectly and quiet

[OHS4]

I meant to quote someone with the dw300 but it did not work. I have a dw300 and I cant even hear it prime, but I could hear the stock one prime. Very quite, pretty cheap, easy to install with the right O rings, best deal IMO.

[8520]

^^^Dre, Im honing in on the DW300, based on what Im reading. More people seem to have installed it than the Aeromotive and havent heard anything bad about it. Plus the DW300 seems to have less amp draw at the same line pressure than the Aeromotive---it flows slightly less at the same amperage, but it will still be more than enough for my setup.

If it's good for 450whp, it's good for me. We have similar power goals as I'd love to be at 450 wheel, but even with meth (if I end up doing it ) my crappy local gas with likely only net me about 425.

[4ringAR]

What turbos are you planning for? PJK04s? FTs?

[OHS4]

He says he has f21's in the first post?

[4ringAR]

Yes, I have F21's. I was asking what turbos Dre is thinking about getting.

[EuroxS4]

I think alot of people have moved onto the bosch 044 pump or the DW300 and the AE rather than the walbro pumps because they are quieter and there have been a few instances where the walbro pumps failed prematurely after only running 0-12 months in the car.Personally i think the bosch 044 is the way to go,the pump was designed back in the 80s and is still in production today and is mostly unchanged for a reason.Not to mention it has it own built in internal sock so you cant really go wrong.No other pump will have a internal sock or fit as well as the 044.

and the 044 pump is still being used by audi's motorsport division so If they are using it im sure its good and solid.

[4ringAR]

I think alot of people have moved onto the bosch 044 pump or the DW300 and the AE rather than the walbro pumps because they are quieter and there have been a few instances where the walbro pumps failed prematurely after only running 0-12 months in the car.Personally i think the bosch 044 is the way to go,the pump was designed back in the 80s and is still in production today and is mostly unchanged for a reason.Not to mention it has it own built in internal sock so you cant really go wrong.No other pump will have a internal sock or fit as well as the 044.

and the 044 pump is still being used by audi's motorsport division so If they are using it im sure its good and solid.

It does not fit in an allroad though.

[S4 00 2.7]

Allroad uses Bosch 040 high output pump. Shorter than 044 pump so it fits in its location. Problem solved.

+1 here on Bosch 044 fuel pump for the b5 s4

[EuroxS4]

I don't believe the 040 is a high output pump but it is possible.The one listed on 034 site thats high output is listed at 175lph at 4 bar.Which is far less than the 044.However they say the 040 is 500hp capable which does not make any sense to me.

[8520]

What turbos are you planning for? PJK04s? FTs?

The bwko4's that I pulled from my a6

[k2switch23]

I am ordering DW300 for my set up. Jason at AMD said it will be just fine for OEM RS6's

[julex]

I think alot of people have moved onto the bosch 044 pump or the DW300 and the AE rather than the walbro pumps because they are quieter and there have been a few instances where the walbro pumps failed prematurely after only running 0-12 months in the car.Personally i think the bosch 044 is the way to go,the pump was designed back in the 80s and is still in production today and is mostly unchanged for a reason.Not to mention it has it own built in internal sock so you cant really go wrong.No other pump will have a internal sock or fit as well as the 044.

and the 044 pump is still being used by audi's motorsport division so If they are using it im sure its good and solid.

You're talking about old walbro 255. This thread is about newest and greatest pump out there, walbro 400 (e85 flavor avail too). If you read what I posted up the thread, with comparison of flow and noise levels, walbro kills even 044, no contest.

[julex]

I don't believe the 040 is a high output pump but it is possible.The one listed on 034 site thats high output is listed at 175lph at 4 bar.Which is far less than the 044.However they say the 040 is 500hp capable which does not make any sense to me.

040 is not enough.