Walbro 255 Fuel pump

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SubaruNation
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Walbro 255 Fuel pump

Post by SubaruNation » Sun Apr 05, 2009 10:36 pm

I couldn't find a thread for it in here already, so lets start one!

Not really much to say other than it's awesome and i highly recommend it.

Like people said in other threads i found, i don't know why you really wouldn't get one as a replacement for the stock one.

they're cool also because of how much smaller they are than the stock ones, except they run better?

Image

Crazy.

I would like to thank 93firestpearl for his help when i was swapping out the stock Pump also.
Zach - Legacy Frankenstin
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Post by SILINC3R » Mon Apr 06, 2009 6:42 am

is this good for a stock car and how much and how difficult
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Re: Walbro 255 Fuel pump

Post by BSOD2600 » Mon Apr 06, 2009 10:33 am

SubaruNation wrote:I couldn't find a thread for it in here already, so lets start one!
Here is my install thread with more pics.

SILINC3R wrote:is this good for a stock car and how much and how difficult
* Yes, works fine in a stock car.
* I paid $133 for mine at subaruparts.com Walbro GSS341 255lph
* It's fairly easy -- at least in a Wagon. Heard its more of a hassle in the SS due to the seats/trunk in the way of things. Have to carefully get the fuel sender pod out of the small hole in the tank with lots of twisting for clearances, etc.
Last edited by BSOD2600 on Thu Jul 02, 2009 7:24 am, edited 1 time in total.

'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.

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Post by SubaruNation » Mon Apr 06, 2009 5:19 pm

yeah, in the review section though. but it all works :)

i would say yes it's very good. i feel a huge difference in the driving and acceleration, but i didn't just do a fuel pump :D.

you might as well, especially if you are planning on increasing the boost
Zach - Legacy Frankenstin
93forestpearl wrote:Keep up the good work. You'll never know what you are capable of unless you push yourself.

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Post by Legacy777 » Mon Apr 06, 2009 11:48 pm

BTW,

You want the GSS341 pump not the GSS342 pump.

There's also an adapter kit, 400-791 you can buy with the GSS341 pump that makes it a plug & play affair.
Josh

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Post by BSOD2600 » Tue Apr 07, 2009 4:30 am

Really? whats the difference between GSS341 pump not the GSS342? Just the position of the inlet/outlet, right?
Mine was plug-n-play. I recall it came with a new filter, and the wires hooked up just fine.

'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.

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Post by SubaruNation » Tue Apr 07, 2009 6:23 pm

thanks josh, yeah i bought the GS341 kit off eaby for $100 and it came w/ everything needed for the swap.
Zach - Legacy Frankenstin
93forestpearl wrote:Keep up the good work. You'll never know what you are capable of unless you push yourself.

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Post by Legacy777 » Tue Apr 07, 2009 8:26 pm

Not sure.....when I bought mine I did some looking and that was what I found.
Josh

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Post by BSOD2600 » Thu Jul 02, 2009 7:35 am

Well Josh is right, you DO want the GSS341 pump. I was mistaken in my earlier posts and thought I got the GSS342. Swapped pumps with the SS today and had a chance to compare the stock vs walbro I had installed a while ago.

Anyways, the GSS341 is a direct replacement:
Image

'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.

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Post by Airgne » Thu Jul 02, 2009 2:36 pm

got a 02 wrx kit that bolted right in paied 182 shipped. easy as hell to install. easy mod and a good one.
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Post by SubiePrice88 » Tue Nov 03, 2009 9:43 pm

so wheres the best place to buy the Walbro 255 GSS341 with everything needed?

Im still a little stumped and kinda hate buying certain stuff online when I cant actually see it in person.

I just want to get the right pump with everything needed
-Jordan

"Nothing Stings Like a Subee"

1992 Legacy SS, 5MT, 140k, some mods ;)
1993 Legacy Wagon, 5MT, 220k!

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Post by asc_up » Tue Nov 03, 2009 9:47 pm

You can get one right from the Subaru dealer. I did for $100 + tax.
-Aaron

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Post by SubiePrice88 » Tue Nov 03, 2009 11:55 pm

What about this one?

http://www.walbro255.com/255-lph-high-p ... 59801.html

Its $95.00 with free ground shipping

I believe its the right one...

Thanks for the help!
-Jordan

"Nothing Stings Like a Subee"

1992 Legacy SS, 5MT, 140k, some mods ;)
1993 Legacy Wagon, 5MT, 220k!

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Re: Walbro 255 Fuel pump

Post by Redlined » Mon Mar 15, 2010 9:46 pm

yup.. thats the correct one and for $25 bucks less than everyone else
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Re: Walbro 255 Fuel pump

Post by darkcrave » Sat Feb 05, 2011 4:53 am

Could a walbro overwhelm the stock injectors if you have 0 mods?
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Re: Walbro 255 Fuel pump

Post by darkcrave » Sat Feb 05, 2011 4:56 am

Could a walbro overwhelm the stock injectors if you have 0 mods?
Tune
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Re: Walbro 255 Fuel pump

Post by BSOD2600 » Sat Feb 05, 2011 8:28 pm

Overwhelm? As in the injector couldn't control is duty cycle? I have my doubts, as many on the board have run the walbro with stockish setups and no problems. How ever, if your injector oring seals are bad, then the increased fuel pressure I suppose could cause some leakage.

Why do you ask?

'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.

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Re: Walbro 255 Fuel pump

Post by darkcrave » Sat Feb 05, 2011 10:20 pm

just wondering if a fuel pump going from so low to 255l would be pumping "to much fuel"
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Re: Walbro 255 Fuel pump

Post by Redlined » Tue Feb 08, 2011 7:25 am

Fuel pressure is regulated just before the injectors. Running the Better pump simply insures sustained pressure at higher than normal Fuel consumption rates (bigger turbo, more boost, bigger injectors etc) there is no risk to running it with stock components. Infact some people on the board have commented on performance gains over the stock unit using stock components
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Re: Walbro 255 Fuel pump

Post by darkcrave » Sun Feb 27, 2011 2:18 am

Installed the Fuel pump today! Walbro makes some great stuff! installed with easy! Highly recommend purchasing the install kit that they sell with it!
Tune
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Re: Walbro 255 Fuel pump

Post by TurnNburn » Thu Apr 21, 2011 6:19 am

Got mine in the mail today. $95 bucks with the kit from Injectedperformance.com with free shipping. They even included a little die cast Hatchi Roku AE86 drift car. Kind of an unexpected addition to my order. lol. Will install tomorrow but i was curious if people were re-using the gasket that goes around where the unit seals against the gas tank. Iv read several threads but no one has mentioned it so it must not be a big deal to use it again (unless it looks like doo doo of course)but i was just curious.
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Re: Walbro 255 Fuel pump

Post by Legacy777 » Thu Apr 21, 2011 6:19 pm

The rubber gasket is fine to reuse unless you see that it's torn or damaged.
Josh

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Re: Walbro 255 Fuel pump

Post by TurnNburn » Fri Apr 22, 2011 2:50 am

Install went great. A little tricky getting the assembly out of the tank though and the old pig tail didnt want to come out without a fight (good thing i got the adapter kit which had a new one in it.) It is a tiny bit louder which isnt surprising considering how much it flows versus how small it is.

+1 for being painless.

Went around my usual stomping grounds after the install and i felt that it stuttered way less when initially hitting full boost, 15psi @3-3.5k rpm. Which is why i got it in the first place. Definitely need to roll around more to be sure though.
1990 NA 2.2 Open Light rally car

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Re: Walbro 255 Fuel pump

Post by Dominator » Sun Apr 07, 2019 5:54 pm

I know this is an old thread, but it's a bump on topic at least.

I ordered the "Walbro GSS341 Fuel Pump" and "Walbro 400-791 Fuel Pump Installation Kit" from Amazon to install into my 1991 Legacy SS to prepare for an autocross that's coming up soon. I'm feeling some stuttering when I use heavy throttle, so I'm hoping this mod will help ensure that fuel delivery is ruled out for that symptom. This is also to prepare for the Rob Tune upgrades I'm installing later this summer, so I need to upgrade for that anyway. I also ordered a Holley Hydramat (PART# 16-111) for this install too. This is an expensive part, but it is amazing. I replaces the fuel pickup sock. If you haven't heard of it before, check out the video from the link below. I put one on my 1997 Legacy after running it at the first autocross. I was getting severe fuel starvation on long right hand turns. I had to run with a damn near full tank to avoid starvation. After the hydramat was in place, I ran that car with lower than an 1/16 tank of gas showing on the gauge. Here's the links. I'll post up anything remarkable after I'm done with the install.

Walbro GSS341 Fuel Pump I paid $53.19
https://www.amazon.com/gp/product/B000EVPCFS/

Walbro 400-791 Fuel Pump Installation Kit I paid $22.21
https://www.amazon.com/gp/product/B000EVTKTC/

Holley Hydramat (3x15) 11MM Outlet w/6 Lock Pin Position PART# 16-111 I paid $163.95 plus shipping.
https://www.holley.com/products/fuel_sy ... rts/16-111

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Re: Walbro 255 Fuel pump

Post by Legacy777 » Mon Apr 08, 2019 6:09 pm

That Hydramat looks pretty cool!!

Thanks for sharing!
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

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