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walbro fuel pump 100% duty cycle? HELP!

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Old Jul 19, 2008 | 07:31 PM
  #1  
j's03wrx's Avatar
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From: Modesto CA
Car Info: 2003 WRX
Unhappy walbro fuel pump 100% duty cycle? HELP!

ok, i have an 03 wrx its got a few mods, and is tuned opensource. When the guy who tuned it for me was doin some datalogging he said my stock fuel pump was at 100% duty cycle and that i will need to replace it with a walbro 255lph. I replaced it and went bak for dataloggin, and still, with the walbro its at 100% duty cycle at 4200 rpms. at idle its already at 33% can anyone help? what is causing this??

my mods are:
vf39 turbo
sti pink injectors
sti tmic
cobb short ram intake
helix dp
invidia up
hks hi power cat
hks bov
gm solenoid
walbro 255
tuned using open source.

SUM1 Please help!
Old Jul 21, 2008 | 08:23 AM
  #2  
FW Motorsports's Avatar
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It's obvious your tuner doesn't know ****.

The Subaru ecu will "stage" the fuel pump via the fuel pump controller.
There are three different "stages":

33%
66%
100%

In other words, this is normal.
Old Jul 21, 2008 | 09:44 AM
  #3  
Egan's Avatar
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Old Jul 21, 2008 | 09:48 AM
  #4  
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lol at tuner....


but good luck!
Old Jul 21, 2008 | 10:13 AM
  #5  
j's03wrx's Avatar
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oh...haha..thanks guys

maybe i should start lookin for a new tuner..
Old Jul 21, 2008 | 11:36 AM
  #6  
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I need that guy to tune my car asap
Old Jul 21, 2008 | 12:12 PM
  #7  
soggynoodles's Avatar
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From: Palo Alto, CA
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Originally Posted by j's03wrx
oh...haha..thanks guys

maybe i should start lookin for a new tuner..
please do.

that's just scary. haha
Old Jul 21, 2008 | 08:21 PM
  #8  
Bagin,DVS's Avatar
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Posts: 555
From: Bethlum, PA
Car Info: silver 2.5 tr 2006MT wrx
The Subaru ecu will "stage" the fuel pump via the fuel pump controller.
There are three different "stages":

33%
66%
100%

In other words, this is normal.



wht do you mean? please explain, i would just like to know.
Old Jul 21, 2008 | 10:33 PM
  #9  
sigma pi's Avatar
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From: Chavez Ravine
Car Info: 03 Impreza WRX
Originally Posted by Paul@dbtuned
It's obvious your tuner doesn't know ****.

The Subaru ecu will "stage" the fuel pump via the fuel pump controller.
There are three different "stages":

33%
66%
100%

In other words, this is normal.
Originally Posted by wrxisthebest
lol at tuner....


but good luck!


and paul i have never met you but i can guess


your favorite thing is fixing other peoples screw ups/ mistakes
Old Jul 22, 2008 | 08:16 AM
  #10  
FW Motorsports's Avatar
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Originally Posted by sigma pi


and paul i have never met you but i can guess


your favorite thing is fixing other peoples screw ups/ mistakes
It's not my favorite...it just happens.
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