Plus you probably don't need more pump than a wally anyway.

Other cars haven't experienced any issues with this pump so I wouldn't cling to your guns and Walbro so quickly.

How quickly everyone forgot about the MASS issue Walbro had with the 169 pumps in which they didn't pump over 58psi and didn't issue a mass recall or warn customers until it was WAY too late. Literally pulled THEIR pumps off the shelves but allowed shops to sell them to customers.

Picked one of these up a couple days ago. Anyone installed one in a 1g AWD yet? (replacing a Walbro 341)?

The only version of this pump that Deatschwerks offers is a 342 replacement, which has the inlet sock on the same side as the outlet. So for the 341 pump swap, you need to cut the hanger pickup tube and use a piece of hose and a couple of clamps to get from the pump outlet to the hanger.

Not that this is a bad thing...it would definitely eliminate the popular o-ring sealing issue.

Car Cannibal said:

Other cars haven't experienced any issues with this pump so I wouldn't cling to your guns and Walbro so quickly.

How quickly everyone forgot about the MASS issue Walbro had with the 169 pumps in which they didn't pump over 58psi and didn't issue a mass recall or warn customers until it was WAY too late. Literally pulled THEIR pumps off the shelves but allowed shops to sell them to customers.

Click to expand...

Did you miss the part about the massive amount of testing that has been performed clocked in over 3K hours.

So how may lbs/min this pump supports at 30 psi? assuming 43.5 fuel pressure

kidtsi said:

So how may lbs/min this pump supports at 30 psi? assuming 43.5 fuel pressure

Click to expand...

Depends on the injector size, AFR, fuel filter flow, line restrictions, etc. etc. etc..

People have made over 620 awhp on E85 with one though. (Kyle's car at MAP is over 600, as mentioned in first post).

They flow crazy numbers at higher voltages though.

calan said:

Depends on the injector size, AFR, fuel filter flow, line restrictions, etc. etc. etc..

People have made over 620 awhp on E85 with one though. (Kyle's car at MAP is over 600, as mentioned in first post).

They flow crazy numbers at higher voltages though.

Click to expand...

It has to be a estimate, lets says 12.5.1 on a -6an lines.

Just ordered my in. Where is the excited monkey icon?

Just got mine in today along with the Fidanza cam gears.

The pump is amazing! Thanks MAP

Did you just pull it out of the box?

Yes sir!

I would have had wood the entire time

Time to upgrade ya.

Haha, it has an intoxicating smell to boot!

Just installed the pump after arriving today from MAPerformance. Great service and fast/free shipping.

Couple notes:

1. The electrical connection on the pump is molded too small. Tried 3 different connectors that I've accumulated over the years from Walbro installs and none of them go all the way on...the tab doesn't click. Applied enough force so it is a press fit, I don't think it will be coming loose.

2. Install kit didn't come with the lower o-ring spacer. I had extra ones again from past installs, so a non issue for me.

I've failed x3 255HP Walbro pumps on E85. I'm really hoping this pump lasts. The noise level is reduced compared to the 255 Walbro, but if anyone is complaining about noise from a Walbro they have never heard a pump capable of 1000+ HP. Up until now those pumps have been the only alcohol compatible EFI pumps (save for the Mallory 5110FI, and maybe a couple others). Otherwise it would be a Aeromotive A1000/Fuelab 41401/SX/etc. They are all way louder than a Whinybro. I've contemplated using a Bosch 044, but haven't wanted to risk failing another pump on E85.

The Deatschwerks pump should fit 90% of the DSM market, unless you have a turbo that supports over 60 lb/min of airflow.

Good to hear since this pump is on my shopping list, as well as a few local DSM friends following the E85 movement. The info helps but did you happen to snap any photos while you were doing the install?

I can't decide if I want to get this one or the new aeromotive 340 pump there flow graphs are almost the exact same at 75-90 psi but the aeromotive 340 pump flows better at low psi even though that really doesn't mater its the 75-90 psi that the 255 dies at.

my1997gsx said:

I can't decide if I want to get this one or the new aeromotive 340 pump there flow graphs are almost the exact same at 75-90 psi but the aeromotive 340 pump flows better at low psi even though that really doesn't mater its the 75-90 psi that the 255 dies at.

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I did not know that about the Walbro 255lph. I would rather have far too much fuel that slightly not enough fuel. I cannot afford to have another *kaboom* hit my bank account.

tanner261 said:

Just installed the pump after arriving today from MAPerformance. Great service and fast/free shipping.

Couple notes:

1. The electrical connection on the pump is molded too small. Tried 3 different connectors that I've accumulated over the years from Walbro installs and none of them go all the way on...the tab doesn't click. Applied enough force so it is a press fit, I don't think it will be coming loose.

2. Install kit didn't come with the lower o-ring spacer. I had extra ones again from past installs, so a non issue for me.

Click to expand...

Hmm, these are quite troubling since the kit is supposed to make this a drop-in. Can we get someone from MAPerformance to respond to these issues?

I have the pump with the 2g install kit. I can't verify the connector issue since you can't until you take the old pump out, and I don't recall what o-ring spacer he's talking about as I installed a walbro about 9 years ago

Boug said:

I did not know that about the Walbro 255lph. I would rather have far too much fuel that slightly not enough fuel. I cannot afford to have another *kaboom* hit my bank account.

Click to expand...

I guess that a modded 255 will flow about the same as the DW300 and the aeromotive 340 but I would rather just buy one that is made to flow that much not forced to

TSiAWD666 said:

Hmm, these are quite troubling since the kit is supposed to make this a drop-in. Can we get someone from MAPerformance to respond to these issues?

I have the pump with the 2g install kit. I can't verify the connector issue since you can't until you take the old pump out, and I don't recall what o-ring spacer he's talking about as I installed a walbro about 9 years ago

Click to expand...

+1 for a response

my1997gsx said:

I guess that a modded 255 will flow about the same as the DW300 and the aeromotive 340 but I would rather just buy one that is made to flow that much not forced to

Click to expand...

I 100% agree with you. I took "cheaper" routes for my last build that was not the wisest thing to do. I have added this to my next build stage.

I wasn't talking about DW, my post was about Walbro's quality issues. I've been following this since the beginning and knew that DW has over 3500 testing hours, and counting, of E85 use on their pump already.

Richard Clark (ZDDP Plus owner) has a flow chart of this pump, he's as legit as they come, search for it if you want outside flow numbers.

I have just added this to my next list of build parts. I am waiving my banner of "safety first" for this build instead of taking "cheaper routes" in the days of 'ole. I currently have a Walbro 255lph, 1250cc FIC injectors and the GT3076r running E85. I am prepared to do some refinement tuning in about two weeks. My goals are 500whp but I do not want to take the chance of the Walbro failing on me. Should I just take it easy until the DW300 arrives at my door? There is no way that I can just install the pump without a tune, right? Also, does the fuel pump need to be re-wired? I ask as I read a previous post of it needing to be done. I, too, am interested if MAP is going to address the issues with the install kit? I, too, believe that an install kit should come with everything needed to install as some of us are not lucky enough to have spare parts that can be used laying around the garage.

You can do 500 whp safely with a Walbro 255, but I would recommend doing the rewire as it's a good idea regardless of what pump setup you run.

You shouldn't have to adjust the tune for a fuel pump, UNLESS you were originally out of fuel pump already. That will show up as you having to add tons of fuel/VE/etc up top and should be apparent during tuning.