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1999 RS RBP Coupe
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460 Posts
Discussion Starter · #1 ·
So my car (1999 RS w/MAF) was having issues idling, so i checked every part of the intake system (its stock right now).

What I found was a cut-out panel filter inside the large airbox (the diamond one just before the intake manifold) It had all the elements removed so was basically just a big square gasket.

My questions is: What is supposed to be in here? A panel filter or a gasket?

Thanks in advance.
 

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1998 Subaru Impreza RS - RBP
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1,762 Posts
In my car (98RS also MAF) the filter is in the lower box; the one on the passenger side of engine bay, close to the front. The upper "box" by the throttle body in the 98's is not able to be opened.

 

· Registered
1999 RS RBP Coupe
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460 Posts
Discussion Starter · #6 ·
Awesome, thanks guys.

Ok, so it looks like the 99's had the open-able type, but used the gasket.

I guess it wouldn't make sense to have two filters.

Dav3: Any idea of a part number or cost?
 
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