Do I need larger injectors for 2012 WRX Stage 2?

jbrewer10 · 12-25-2012, 10:08 PM

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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bluemax189 · 12-26-2012, 09:21 AM

no injectors needed for stage 2 at all. protunes are typically around $500 around me plus the pre dyno inspection.

Cobb Tuning · 12-26-2012, 02:42 PM

Quote:

Originally Posted by bluemax189

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

kris5597 · 12-26-2012, 09:42 PM

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

jbrewer10 · 12-30-2012, 04:19 AM

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

12-25-2012, 10:08 PM	#1
jbrewer10 Scooby Newbie Member#: 341547 Join Date: Dec 2012	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! * Registered users of the site do not see these ads. Last edited by jbrewer10; 12-25-2012 at 10:17 PM.

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12-26-2012, 09:21 AM	#2
bluemax189 Scooby Specialist Member#: 137405 Join Date: Jan 2007 Chapter/Region: MAIC Location: Baltimore Vehicle: 2011 WRX WRB	no injectors needed for stage 2 at all. protunes are typically around $500 around me plus the pre dyno inspection.

12-26-2012, 09:42 PM	#4
kris5597 Scooby Newbie Member#: 341546 Join Date: Dec 2012 Chapter/Region: South East Location: Baton Rouge Vehicle: 2013 WRX Ice Silver	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

12-30-2012, 04:19 AM	#5
jbrewer10 Scooby Newbie Member#: 341547 Join Date: Dec 2012	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