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Old 12-25-2012, 11:08 PM   #1
jbrewer10
Scooby Newbie
 
Member#: 341547
Join Date: Dec 2012
Location: Denver
Vehicle:
2012 WRX Hatch

Default Do I need larger injectors for 2012 WRX Stage 2?

Hello all,

I've been thinking about getting a stage 2 protune on my 2012 wrx and have a couple of questions:

Do I need to upgrade from the stock 565cc injectors in order to not run too lean and damage my engine?

How much does a protune generally cost?

Mods
Invidia catless DP
Invidia catless UP (also, do I really need this??)
K&N Typhoon SRI
SPT catback
Cobb AP

Thanks!
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Last edited by jbrewer10; 12-25-2012 at 11:17 PM.
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Old 12-26-2012, 10:21 AM   #2
bluemax189
Scooby Specialist
 
Member#: 137405
Join Date: Jan 2007
Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2011 WRX
20g

Default

no injectors needed for stage 2 at all. protunes are typically around $500 around me plus the pre dyno inspection.
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Old 12-26-2012, 03:42 PM   #3
Cobb Tuning
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Member#: 4803
Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
Default

Quote:
Originally Posted by bluemax189 View Post
no injectors needed for stage 2 at all. protunes are typically around $500 around me plus the pre dyno inspection.
Actually, many Stage2 2009-2013 WRXs max out their injectors with fully catless exhaust components, especially in colder climates and near sea level because they are extremely prone to boost creep. Many cars here in Oregon are untunable without an EWG to keep boost under control, or upgraded injectors/pump to keep up with the excessive boost creep. OP, you will want to work with your tuner to find out if you'll have the adequate fueling available

Cheers

Lance
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Old 12-26-2012, 10:42 PM   #4
kris5597
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Member#: 341546
Join Date: Dec 2012
Chapter/Region: South East
Location: Baton Rouge
Vehicle:
2015 WRX
CWP

Default

Hi Lance,

How much on average does the boost increase during boost creep? Does it ever spike to 20psi or more there in Oregon? I live in Louisiana at sea level, just trying to get a ball park of what I should expect from the different elevation and modifications. I will be running the Perrin DP to help with the boost creep and to also maintain a catalytic converter.

Kris
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Old 12-30-2012, 05:19 AM   #5
jbrewer10
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Member#: 341547
Join Date: Dec 2012
Location: Denver
Vehicle:
2012 WRX Hatch

Default

Thanks guys!

I've decided to drop the SRI as it will just further lean out my car, and since the stock intake is more than adequate. Instead, in order to keep boost levels constant (and safe), I'm focusing on the following mods:

Invidia catless DP
Invidia catless UP
SPT catback
GFB BOV/BPV
GS EBCS
Cobb AP
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