Links to info on cold-air intakes and the MAF sensor
 

Doesn't matter if it's a short ram or CAI - anything that changes the airflow in the vicinity of the MAF (mass airflow sensor) will affect tuning in a negative way. Leave it stock unless you plan to spend the bucks for an hour of dyno tuning for little or no gain just to smooth out the torque curve.

MAF mis-readings as [url=www.i-club.com/forums/showthread.php?s=&postid=310277#post310277][color=blue]explained[/color][/url] by [i]BAN SUVS[/i].

This is an alternative method of [url=http://www.ecutek.com/tuning/induction/][color=blue]correcting[/color][/url] what the aftermarket intake does to MAF metering posted by EcuTek in the UK.

Josh of Cobb Tuning on [url=www.wrxforum.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=2;t=000395][color=blue]aftermarket intakes[/color][/url].

Topic again [url=https://www.i-club.com/forums/showthread.php?t=4397][color=blue]explained[/color][/url] by [i]azscoobie[/i] (Clark) and confirmed by Shiv Pathak of Vishnu Performance.

It may be a different story if you're upgrading to a big turbo (bigger than the usual VF30/34 on an EJ20) or a front-mount intercooler which necessitates the use of an aftermarket intake.

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"…axles of evil…" - george w. bush[/color][/size]

could you make a thread similar to this explaining the details of MBC's, PTFB, and the differences between Open Loop and Closed Loop fueling?