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Old 04-08-2012, 01:20 PM   #1
Scooby Newbie
Member#: 171290
Join Date: Feb 2008
Chapter/Region: SCIC
Location: San Diego, CA
2008 STi
Aspen White

Default Do I need bigger Injectors?

So I'm looking to have Clark Turner tune my car when I get setup here.. Here's what I got:

Grimmspeed EBCS
Walbro 255 Fuel Pump
TBE (Greddy Ti-C Catback / Invidia DP in the mail)

I talked to Clark and he actually recommended a dw65c fuel pump (before I got the walbro) and dw850cc injectors.. It seems like there are a ton of people running on my same setup without bigger injectors and some even without the fuel pump.. So I'm wondering if it's just his method of milking every bit out of the car or if I actually need the injectors at this point? I just don't have the funds right now to go there and pay for a tune on top of that.. Thanks for the help!
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Old 04-09-2012, 09:27 AM   #2
Scooby Specialist
Member#: 235338
Join Date: Jan 2010
Chapter/Region: South East
Location: Georgia
2002 Faggin Wagon


what fuel are you using? E85 or 93/91?
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Old 04-09-2012, 10:51 AM   #3
Scooby Specialist
Member#: 165104
Join Date: Nov 2007
Chapter/Region: SCIC
Location: Riverside CA
E85 SoCalPorting


If that's what your tuners recommending for your setup you should probably follow his advice.

In my opinion...... 850s for a stock turbo is fine and gives you room to switch fuels or a differant turbo in the future is you ever decide to do so.
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Old 04-15-2012, 11:22 AM   #4
Scooby Guru
Member#: 36033
Join Date: Apr 2003
Chapter/Region: SCIC
Location: Tuning Lab
CEO PhatBottiTuning
2006 STi GTX3582 + Meth


many cars run on stock injectors and stock fuel pump at stage2.

Your IDC's will be 90-100% depending on the AFR.

a bigger fuel pump will help keep the idc's down IF the idc's are falling off due to the stock pump being done.

the injectors and pump are basically adding ~$600 to the cost of a stage2 car....
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Old 04-27-2012, 07:20 PM   #5
Scooby Newbie
Member#: 281871
Join Date: May 2011

Which size injector do you have now?
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Old 04-27-2012, 07:25 PM   #6
Scooby Specialist
Member#: 300955
Join Date: Nov 2011
Chapter/Region: Tri-State
Location: Bethel
2004 WRX
Java Black Pearl


Originally Posted by DannyW
Which size injector do you have now?
Stock, I'm assuming.
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Old 04-28-2012, 11:40 PM   #7
Scooby Specialist
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
2002 wrx
Captain America tuned


not necessary for pump gas.
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