Cone filters have been discussed hundreds of time on the 944 board alone. nobody agrees and everyone has the same arguments every time.
http://forums.pelicanparts.com/showthread.php?threadid=159800&highlight=cone+filters
http://forums.pelicanparts.com/showthread.php?threadid=160539&highlight=cone+filters
http://forums.pelicanparts.com/showthread.php?threadid=158850&highlight=cone+filters
http://forums.pelicanparts.com/showthread.php?threadid=148586&highlight=cone+filters
http://forums.pelicanparts.com/showthread.php?threadid=112441&highlight=cone+filters
My favorite quote is from the last link from CJFusco:
Quote:
"Changing to a cone filter or putting in a K&N filter - Will make the engine breathe a little better - A bit more power, but I have serious doubts about the claims of up to 15HP just by changing an air filter. 3 - 10HP is more realistic, with numbers coming in on the lower end of the scale "
A K&N filter WILL give you a power increase - just remember that you are replacing a DIRTY and USED filter with a brand-spanking new K&N filter. Replacing any worn-out part will increase performance; for example, I replaced my ratty old plug wires with some high-quality Jacobs blues, and the difference was actually noticable.
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