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  #31  
Old 05-08-2010, 02:36 AM
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Quote:
Originally Posted by EXPLICIT View Post
Re: panel filters.

Our UK counterparts have conducted some flow rate tests on the replacement dry filters. STI Motorsport unit came last - factory paper filter was best value for money with the typical non oiled aftermarket 'green' and hks filter coming up as the best flowing unit.

Seems the homologation STi filters whilst they are a motorsport unit, their intended use is for homologated Group N use. I.e. offroad. Sythentic weave material filters very well and the metal screen is effective in keeping the rocks at bay. These positives have an effect on flow capacity for the sake of reliability.

Interesting stuff no doubt.
when you consider that group n cars have 32mm restrictor on the inlet to the turbo...

air filtering quality becomes more important than air flow quantity.
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  #32  
Old 05-08-2010, 08:04 AM
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Quote:
Originally Posted by type25 View Post
when you consider that group n cars have 32mm restrictor on the inlet to the turbo...

air filtering quality becomes more important than air flow quantity.
they have now moved to a 33mm restrictor
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  #33  
Old 05-08-2010, 08:33 AM
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If 10kW could be gained by simply changing to a different type of air filter, then Subaru would have done that already. The airfilters on most well designed modern cars have very little restriction, and are already located to pick up cold air.
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  #34  
Old 14-08-2010, 06:09 PM
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where can i order a k&n filter online?
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  #35  
Old 14-08-2010, 06:20 PM
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found this
http://au.dir.yahoo.com/Business_and...omotive/Parts/
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