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Old 06-08-2003, 09:59 PM   #1
Unsung Boxer
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Join Date: May 2003
Location: WA state
Default Walbro VS WRX Fuel Pump

Ok I am debating on what is a better pump for the money.


I assume that a WRX pump used is about 50-70 bucks, while a walbro is 100-120?

Setup:

EJ22 na w/ EJ22t internals (8:1 compression, 0-ringed head)
WRX TDO4L
WRX intercooler
EJ22t 360 Injectors
APEXi SAFC
Custom Up/Down Pipes
Autometer EGT & Boost Guages
(no Timing control yet, stock 98 ECU)

Immediate Plans:

180 whp.

Long Term Plans:

after dynotuning, JS Safeguard...
200-220 whp??? (is that about 300 crank?)


I wont skimp on the pump if it will hurt me in the end. Since my pistons are cast, I dont think they can hold much more than 300 crank max... so I never plan on exceeding that. I would like about 210 WHP w/in the next year.

Will a WRX fuel pump be sufficient?
On the same note, will my 360's be sufficient?
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Old 06-09-2003, 02:03 PM   #2
Graham
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257/FMIC/T3-T04S

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I think you will be pushing it with the 360's personally. You might be able to max them around 210 WHP, but it might be a good idea to upgrade them just to be safe. However, I could be wrong and their might still be room for them.

As for the pump, I think the WRX pump will do just fine. I have seen WRX's do more than 210 WHP on the stock pump just fine. Quite a few turbo Impreza's use this pump with their WRX style turbo setups. The Walbro flows 255 LHP, which is LOTS of fuel, much more than needed for 210 WHP.


Graham
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Old 06-10-2003, 12:54 PM   #3
RS_NW
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Default

The walbro is supposed to be much louder.
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Old 06-11-2003, 04:12 AM   #4
kaos200
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Default

Quote:
Originally posted by RS_NW
The walbro is supposed to be much louder.
the intake one isnt noticeable unless you stand by the tank and TRY to hear it

then again, I just got an external pump and Im comparing it to that loud thing

Last edited by kaos200; 06-11-2003 at 04:18 AM.
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Old 06-11-2003, 07:56 PM   #5
Jaxx
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hmm i think i paid like $25 shipped for my wrx fuel pump
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Old 06-13-2003, 12:40 PM   #6
garface
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Check out "auwrx" on i-club. He sells the Walbros for like $90-$95
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Old 06-13-2003, 12:52 PM   #7
Unsung Boxer
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Default

IF i buy either the Walbro or the WRX pump... can I install it and run w/ it before i put my turbo stuff in (w/o putting injectors in)...???

Or will this cause my car to run richer? if so, i have an SAFC to help correct it, but its almost pointless since i am guageless right now. Im just trying to find a way to get as much turbo stuff installed before putting the turbo in, as to cut down on variables in case i have a problem after boosted.

-Jake
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Old 06-13-2003, 04:49 PM   #8
Graham
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You can absolutely do that. I put my pump in before the turbo. You will run a bit richer, but the extra fuel won't hurt you. Actually, you will probably notice a little power gain with just the pump.


Graham
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Old 06-13-2003, 04:54 PM   #9
yebokmj
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Brilliant Red

Default Past discussions

I believe the WRX pump will be enough for your goals. If you do a search on the pump I'm sure you will find more info on it. I know it has been discussed in the AFI forum before. As to the walboro that's what I run and it's loud sure but so are our cars anyways. As to running to rich you should be fine if you get the right Walboro model, one will raise the fuel presure and one won't and I don't believe the wrx one will have any effect.
Joshua
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Old 06-13-2003, 06:56 PM   #10
Sunrise City Rider
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Because your car is N/A and your injectors are smaller than the WRX, you will want higher fuel pressures than the stock WRX Fuel Pump will provide effieciently...

Go with the Walboro and be happy...

You will notice it purring as it is a high pressure/high volume fuel pump, but thats only at idle when your'e not blowing flames when boosting...

Believe me...The WRX Pump is not enough for 10:1 compression Turbo with 270cc injectors and anything above 3psi of boost...

Zee
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Old 06-13-2003, 07:04 PM   #11
yebokmj
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Default Not with his setup

If you look at his setup he has larger injectors and so will not be needing to obtain high fuel pressures and he also isn't running a 2.5 or a high compression engine. The WRX will suit his needs.
Joshua
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Old 06-13-2003, 07:09 PM   #12
Sunrise City Rider
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Exactly...Buddy got the right idea and I didn't realize you weren't on a stock EJ25...


Zee
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Old 06-20-2003, 09:19 PM   #13
Unsung Boxer
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this is still a tough decision, so far im leaning twords WRX pump for cost effectiveness... no one has really convinced me that it wont be sufficient for up to 280 crank hp...???
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Old 06-20-2003, 09:29 PM   #14
Sunrise City Rider
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Its not the power that its capable of sustaining...Its the amount of flow per PSI of pressure...

The WRX is about half as strong/effiecient of the Walboro...

I feel that you will want to use the Walboro and a 1:1 Fuel Regulator with the stock WRX Injectors...

Reference the Regulator directly from the Compressor's Nipple and not from the Intake Manifold...

Zee
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