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2002 Forester S sport
128 Posts
Discussion Starter · #1 · (Edited)
Ok, well I installed my K&N replacement filter when I took a look at how the intake system is made on this car.

We all know the intake comes from a small 2x2 hole in the front under the hood... which goes into a huge box and a small pipe which extends down towards the tranny..
Now I know about the home depot airbox mod.. but was wondering what does the OEM front box do? and that 2" tube which extends towards the tranny?

Is it to lower intake noise? Add torque?
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