Quote:
Originally posted by Bethencorp
Brucelee the K&N is a good choice, but does not offer the same airflow that the Evo filter would. Evo is claiming 8-10 hp and a lot more sound. I question whether it is harmful, rather than helpful. I see the point of the Evo pulling in warm air from around the engine. This would be more so on longer rides where the heat would build up rapidly in the engine compartment.
What advantage is there to the BMC vs. K&N?
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This may just be some more internet B.S but on some other boxster boards K&N users said they experienced fouled MAS due to the filters being over-oiled at the factory. The BMC is twice as much as the K&N, but it is slightly better quality and you shouldn't have to worry about MAS problems and CEL's. I'll spend 35 extra bucks for peace of mind.
The stock tube that has the resonance chambers is slightly more restrictive than the evo tube, plus quieter. EVO sells the tube and a K&N filter that replaces the stock but the kit costs 200 bucks(it's similar to the tube that comes with the cone filter intake). I'm not going to pay 200 dollars for a plastic tube(thats insane) but it would be a nice edition to the intake system. That and also an enlarged throttle body from S-Car-Go. Those upgrades would probably give the car is much hp/sound as the EVO cone filter setup.
Here's the EVO Wbsite link that may prove helpful for Some on what were talking about.
http://www.evoms.com/p%20boxster%20induction%20tuning.htm