Performance Air Filters

[stubbsy996]

Afternoon Chaps,
Is it worth replacing the normal air filter with a BMC or K&N performance filter to my 996 C2 (1998) - What difference would I notice, (apart from being at least £60+ lighter in the pocket) ?

[domster]

more induction noise in most cases

no noticeable increase in performance

possible increased engine wear over a long duration of time

consensus would be to simply replace the paper filters regularly; they're not bad at what they do

in a race engine where engine wear isn't a problem, there could be more sense in getting a freer flowing filter and mapping the engine accordingly

do it for the induction noise if you have to have a reason

[verysideways]

if you want induction noise put a few holes in the airbox cover - stick to the paper filters, as Dom said they do a good job (and they're cheap as chips to replace)

[sleep envy]

VS - www.pistonheads.com/gassing/topic.asp?t=288116&f=48&h=0&p=15

[911addict]

Induction noise? Just that sucking sound? Not very exciting surely?

[domster]

911addict said:

Induction noise? Just that sucking sound? Not very exciting surely?

Depends what turns you on

[wildoliver]

I did it to my 964.

main reason a paper filter is £10 the K=N about £45, i figured I was doing at least 2 filters a year and after 2 years it would pay for itself.

I don't notice any noise increase, or power, or economy, but thats not to say they aren't there I just haven't noticed them. what i do notice is my services are a tenner cheaper!

[ricardo60]

Go for it I say. Fitted fabspeed induction & filter & exhaust & made, subjectively, a big difference to car.

[JG911]

Iv got a K&N in my box all seems ok.