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Old 01-22-2006, 12:42 PM   #1
trbo-4
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Member#: 105455
Join Date: Jan 2006
Chapter/Region: MWSOC
Location: St. Louis, MO
Vehicle:
2004 WRX Wagon
Cobb Stg. 2

Default 2004 Tuning question

Forgive me if this has been asked a thousand times but I have read and have been told that I need to do an EM upgrage before I do any mods on my 2004 like exhaust, up , dp etc... I am sure it would make the car better but is it mandatory I purchase the AP or UTEC before I install anything else?

Thanks.
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Old 01-22-2006, 02:43 PM   #2
Boxer112
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Join Date: Jan 2005
Chapter/Region: International
Location: Manama, Bahrain (from NY)
Vehicle:
2015 WRX STi
Crystal White Pearl

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I Just Put My Turboback On Without Any Em And I Noticed A Big Loss In Power, Cobb Ap Is Coming Soon, I Barely Drive It And If I Do. I Dont Drive In Boost
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Old 01-22-2006, 02:44 PM   #3
Boxer112
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Em Is A Must
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Old 01-22-2006, 03:25 PM   #4
mcowger
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You really should, given that you have an 04 WRX. Will your engine explode instantly? Probably not. Will you shorten the life without EM? Probably.
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Old 01-22-2006, 04:25 PM   #5
trbo-4
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2004 WRX Wagon
Cobb Stg. 2

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Ok, thanks. That about sums it up.
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Old 01-22-2006, 09:40 PM   #6
pudnana
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Location: Lake Montezuma AZ
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2000 Blue 2.5 RS
2004 Java WRX

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I just did some mods on my car, and i ran a bosal downpipe for about 30-40 miles on my car with no problems. I didn't even get a check engine light until the last mile. I soon after flashed to Stage 2 with my AP though.
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