Why two air filters?

Question

Hi, this is my first subaru(Impreza 1999) and there is two air filters. Whyall this restriction? Is it really necessary? Can i take out one of them?    Jean

Edward Hayes · Accepted Answer

What two filters??

X-Eliminator · Answer

Do yo have a California car ?=============================================================

Johnny · Answer

Impreza sold in the area of Montreal QC Canada."X-Eliminator"  a écrit dans le message de news:

rick · Answer

Is there actually a filter in each box?  I thought one of them (probably theforward-most) is supposed to be empty.Rick

Johnny · Answer

No filters on each."rick"  a écrit dans le message de news:

Philippe Javaux · Answer

In the 2.2l 1999 Impreza in Canada it should have one air filter in thefirst airbox. The second air box is empty."Johnny"  a écrit dans le message denews:kz9vc.28$

Johnny · Answer

Second box = beside the throttle body?"Philippe Javaux"  a écrit dans le message denews: sRmvc.97748$

X-Eliminator · Answer

Yeah - the one attached to the throttle body has NO filter inside.But if it's a California car, it's reversed, the other one is empty.==========================================================

99Red_Forester · Answer

Mine have 2 air filters. for real. 99Forester L (Canadian)

1 really big filter by the firewall/throttle body. 1 smaller filter (regular rectangular sized) by the passenger side fender.

Interesting. So, in most cases, you guys/gals have 1 empty box?? How 'bout Subarus in Oz?

A little off topic here... with reduced Air Flow restriction, do you get better high end power OR does it improve all around driving? What does it do to gas mileage? I'm thinking of removing 1 filter.

Leo inToronto

Shane Brittle · Answer

Aussie Imprezas (non turbo) have one air filter, next to the throttle body.CheersShaneCanberra

99Red_Forester · Answer

Thanks for the reply. OK. I'm removing the smaller filter.Leo

Why two air filters?

Join the Discussion

Didn't find your answer?