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Old 04-29-2001, 09:31 PM   #1
Scooby Specialist
Member#: 2389
Join Date: Sep 2000
Location: Las Vegas, NV
'98 Impreza L Wagon
'90 Talon TSi AWD

Post Taking out the airbox in a MY00/01

Where exactly is the sensor on the MY00/01's intake? I'm running a GanzFlow right now, but was toying with the idea of opening the hood scoop, removing the airbox, and just slapping a cone filter directly onto the throttle body. I know I'll lose big time low end, but will this work without any other electronics? I know it's been done before, but I couldn't find any info on the air sensor adapter/removal/etc.
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Old 04-29-2001, 10:02 PM   #2
Scooby Newbie
Member#: 4992
Join Date: Mar 2001
Location: Revelstoke BC, CANADA
2000 Impreza 2.5 RS
Blue Ridge Pearl


The MY00 has a MAP sensor, which is in the throttle body itself. Slapping the filter directly on the throttle body will usually degrade performance.

An intake pipe or cold air intake system offers a few things:

1. Cold air (super important, you won't get much of this at the top of your engine - even with the hood scoop)

2. Organized air - it sounds silly, but the more uniform the airflow when it enters the intake manifold, the faster it gets through.

3. Space for vacuum fittings (you can't do without some of these, true you can pull them off of elsewhere, but it would degrade the accuracy of any vacuum sensors and lessen the vacumm any other systems recieve)

Also, if you're getting pelted with rain, your filter will get wet if you open up the scoop and mount your filter below it.

But by all means, open up that scoop.

Guys, let me know if I'm off in any of my info...

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