K&N Air Filters Topic is solved

NORDX · Post by **NORDX** » 30 Jul 2005, 13:22

Is there any evidence that putting a high air flow air filter (K&N) into a S40 (2001) will damage any sensors such as the O2 sensor?
Also does it actually improve the horse power or milage?

alfonzobonzo · Post by **alfonzobonzo** » 02 Aug 2005, 08:57

no it shouldnt,

yes marginaly both, just done mine & if i floor it, my fuel economy gets worse but if i cruise it is better

so more air must be getting to the engine for it to deliver more fuel