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Old 01-08-2006, 10:44 AM   #1
kris84
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Default Using Cobb AP w/ mods

I'm deploying for 4 months on the 18th and plan on getting the Cobb AP when i get back. I just wanted some input on what kind of mods i can use with the stage 2. I was reading on the Cobb tuning site that you can only use the stock intake and intercooler and it didn't say anything about an aftermarket UP on the requirements. Would appreciate some input.

-Kris
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Old 01-08-2006, 11:01 AM   #2
ALaDDiN
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From what I know, you have to have a complete TBE. I know the stage2 does not work well with other mods. Correct me if I am wrong.
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Old 01-08-2006, 11:52 AM   #3
joeyb7
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correct me if I'm wrong, but I think as long as you have a downpipe and cat-back your fine.

Someone that's knows for sure please chime in.
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Old 01-08-2006, 12:59 PM   #4
mcowger
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All you NEED is DP. Catback, UP, IC hoses, etc are within the range that the mapping is desigend for. I'd actually highly recommend the full TBE as well as UP.

But yes, keep the stock intake system.
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Old 01-08-2006, 01:25 PM   #5
Needles
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I had a full Turboback,UP,and IC hoses when I was stg 2.No problems with that setup.
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Old 01-08-2006, 01:55 PM   #6
SirWilliam
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These questions are already answered on the site:

http://cobbtuning.com/wrx/accessport-faq.html
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Old 01-08-2006, 05:23 PM   #7
02WHITEDUB
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Yup, the UP is within the acceptable mods for Stg 2. Intake and different IC are not.

I've got the max mods allowable by stage 2: UP, TBE, I/C hoses. My car runs strong and smooth - no issues.
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Old 01-08-2006, 06:08 PM   #8
SirWilliam
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Quote:
Originally Posted by 02WHITEDUB
Yup, the UP is within the acceptable mods for Stg 2. Intake and different IC are not.

I've got the max mods allowable by stage 2: UP, TBE, I/C hoses. My car runs strong and smooth - no issues.
You can also have a lightweight pulley, turbo inlet hose, and MAF hose
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Old 01-08-2006, 06:23 PM   #9
02WHITEDUB
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Quote:
Originally Posted by SirWilliam
You can also have a lightweight pulley, turbo inlet hose, and MAF hose
I was going to list the pulley etc but didn't feel like opening another explorer to check Cobb's site

I don't think I want those mods though - certainly not the pulley. What kind of gains would one truly expect by throwing on those 3 things to my current setup?

Isn't the common 'wisdom' around here to stay away from MAF and turbo inlet hoses without a dyno tune?
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Old 01-08-2006, 06:29 PM   #10
ropethiswrx
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what about a header???
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Old 01-08-2006, 06:59 PM   #11
SirWilliam
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Quote:
Originally Posted by 02WHITEDUB
I was going to list the pulley etc but didn't feel like opening another explorer to check Cobb's site

I don't think I want those mods though - certainly not the pulley. What kind of gains would one truly expect by throwing on those 3 things to my current setup?

Isn't the common 'wisdom' around here to stay away from MAF and turbo inlet hoses without a dyno tune?
Gains from lightweight pulley: ~3-5WHP...varies w/ mods.
Gains from turbo inlet hose: smoother airflow and slightly quicker spool
Gains from MAF hose: mostly for aesthetics but w/ slightly help smooth airflow to turbo to help spool faster...most people don't upgrade this hose b/c it isn't cost effective.

As for needing a dyno tune w/ those 2 hoses, you don't.
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Old 01-08-2006, 07:13 PM   #12
kris84
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Has anybody used the Cobb Stage 2 w/ an FMIC? What about a BOV? I read the FAQ from Cobb but didn't really say anything specific except for the AP's ablility to learn.
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Old 01-08-2006, 07:17 PM   #13
02WHITEDUB
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Quote:
Originally Posted by SirWilliam
Gains from lightweight pulley: ~3-5WHP...varies w/ mods.
Gains from turbo inlet hose: smoother airflow and slightly quicker spool
Gains from MAF hose: mostly for aesthetics but w/ slightly help smooth airflow to turbo to help spool faster...most people don't upgrade this hose b/c it isn't cost effective.

As for needing a dyno tune w/ those 2 hoses, you don't.
Meh - I'm happy where I am.

I'm pretty sure people have reported enough problems/issues using pulleys (underdriven and lightweight) that I'll just stay away, thanks.
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Old 01-08-2006, 09:10 PM   #14
JF824
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Quote:
Originally Posted by kris84
Has anybody used the Cobb Stage 2 w/ an FMIC? What about a BOV? I read the FAQ from Cobb but didn't really say anything specific except for the AP's ablility to learn.
I wouldn't suggest using a FMIC with stg. 2. With a stock TD04 you would just be increasing lag, and a BOV will cause your car to run rich in between shifts which isn't horrible but why do it if you won't see any positive gains. Stick with the stock I/C and BOV, and if you must get a BOV, upgrade your AP and get a protune to match the BOV.
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