High Flow or Cold Air?? - Subaru WRX Forum
 
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post #1 of 6 Old 07-23-2007, 01:37 AM Thread Starter
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High Flow or Cold Air??

I was looking at getting an HKS super mega flow intake for my stock 07 wrx. Would this be better than getting an AEM cold air intake?
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post #2 of 6 Old 07-23-2007, 02:43 AM
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Both are bad...very very very very very very very very very very very very very very very very very very....BAD...Stock WRX+Intake= FAIL...Unless you are upgrading the turbo or plan on getting a protune an intake is pointless, stock airbox flows plenty. Save ## money for an Accessport and TBE
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post #3 of 6 Old 07-23-2007, 02:52 AM Thread Starter
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I was planning on addinng and HKS Carbon Ti CBE first. I figured I would oped up both ends a little as my first two mods. Why would this be bad and what would be better?
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post #4 of 6 Old 07-23-2007, 04:42 AM
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Let me introduce you to The Manifesto...

http://forums.nasioc.com/forums/showthread.php?t=533787

This is the best resource to consult when planning modification...Unabomber has thoroughly researched his facts and opinons. Trust me it is a great tool.

But to answer your question, the stock airbox on the WRX is a very efficient piece of equipment. The way it is mounted in the engine bay supplies the engine with cold air and flows quite well. Even the stock exhaust (cat back) isnt very restrictive. The restriction is in the downpipe, therefore the requirements for Cobb's Stage 2 is
1. Accessport (V1 or V2)
2. Turboback exhaust (new downpipe and catback)
3. For the best results a custom tune by a professional tuner (Protune)

Also something you will discover in your quest to modify, is that the 06/07 WRX has issues with downpipes. They usually lead to "boost creep" this could be potentially devastating to your engine, so fully research your choices and modification pathway.

Hope that helps.
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post #5 of 6 Old 07-23-2007, 07:07 PM
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06/07 only have boost creep issues WITHOUT EM get EM have no problems

MIKE
TUNED BY 555 MOTORSPORTS
visit me @ www.myspace.com/subienews
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post #6 of 6 Old 07-23-2007, 10:27 PM
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I really dont want to get into the Mechanical issue vs EM issue about Boost Creep. I will just say that for some EM does a significant amount while for other (mostly in cooler areas) its not enought, because it is a MECHANICAL PROBLEM.
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