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Old 10-24-2016, 11:05 PM   #1
Drft4spd
Scooby Newbie
 
Member#: 174880
Join Date: Mar 2008
Chapter/Region: E. Canada
Location: ottawa, Canada
Vehicle:
2012 WRX STi HB
Plasma Blue Pearl

Default fuel pump D65c or D300c

Hi All, i'm planning on doing stage 2 (dp,intake/tune/ebc...) my tuner tell me to get a dw65c @265lph. however, i will plan to switch the turbo next year and push my motor to around 450. at this stage, should i just go bit higher and get the dw300c ? or is it "Way" overkill for what i need? what are the general rule of thumb for choosing fuel pumps? thanks in advance
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Old 10-25-2016, 02:36 PM   #2
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

Bigger pump = wiring modifications.

Aside from that, you're welcome to go as big as you want without any issues with the engine running. You do not NEED a pump currently, unless yours is getting tired (over 85k miles?).

My personal two choices are usually:

Walbro 255
Bosch 044 (or multiple)

They are both proven, readily available from a TON of sources, and they'll get the job done. Once you get into E85 territory (or other racing fuels), you may need to take a closer look at this.

Given you will be running higher boost in the future, I urge you to compare the 044 pump performance at elevated pressures to competing pumps. Most aftermarket pumps will work great at stock pressures, but once you increase pressure, the flow tends to drop off on most - the 044 is considerably more linear in it's performance (pressure vs. flow) curve.
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Old 10-25-2016, 10:03 PM   #3
MikeG4936
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Member#: 260561
Join Date: Oct 2010
Chapter/Region: TXIC
Location: Dallas, TX
Vehicle:
2006 Impreza WRX Ltd
Grey

Default

Walbro 255 if on pump gas
AEM 320 if on E85
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