Aftermarket air filters?

[Bluesman69]

Have had Jetronic system on my other similarly engined cars (Marcos fitted with BMW engine) and improved airflow etc by fitting K&N filter.
Would I be right in assuming it would be a worthwhile change to our standard 2.5 set-up??
Cheers

 

[Hairyarse]

Fitting a K&N in a the standard airbox should be a good thing but avoid an induction kit IMO unless it has a cold air feed. Fitted one to a VR6 once and whilst it sounded nice and 'raspy' I took it off within a week. Given it was sucking in all the hot air from around the engine I noticed a distinct lack of performance. Standard air filter was much better!

 

[scam75]

+1 for a K&N panel filter or something similar. Will give you a couple of BHP (not much), is re-usable after cleaning and will last a lifetime. Remember to clean it though, I cleaned mine today for 1st time in 10k miles and it was quite comprised by the crap built up in the ridges.

Induction kits are fine of they are thought out properly and you are chasing big BHP but the standard air box does the trick otherwise.

Stuart

 

[Bluesman69]

Thanks guys. That's what I wanted to hear.
Always reliable

 

[Northern924]

Yep I'd stick with the panel filter, I know that eldavo has fitted a cone type but he'll admit that it needs some sort of cooling, sounds great, but they way I look at it is that if it was a better design Porsche would have done it [] They are German and over engineer everything if they can! Amazing what a fresh filter can do to the feel of the car!

 

[Mike_Pollock]

My 2.7 had a K & N cone - first thing I changed!

 

[Fat Albert]

Mine has a cone filter, how's best to clean them?

 

[Mike_Pollock]

Throw it away and put it back to standard!

 

[TTM]

ORIGINAL: A9XXC
Throw it away and put it back to standard!

Agreed.

 

[Northern924]

What they say to be hionest, cone filters may work on some carsa, and I agree its a nice sound but you're better off with a standard box and a K&N panel filter in it.

But to clean it depends on the type you have, some you can just hoover out

 

[Keith D]

Please help how do I remove the air filter cover ??

 

[Northern924]

4 screws, one on each side, you'll need a long philips top get to the one on the side next to the expansion tank []

 

[Keith D]

Great topic, followed by my simple Q, how do I remove the air filter cover ?? on a 944 s2 have removed the philips screws but please what next.

 

[Keith D]

Thanks but am I being a bit thick can't seem to see any other fixings other than at the front by the pop up lights

 

[Peter Empson]

ORIGINAL: Fat Albert

Mine has a cone filter, how's best to clean them?

For mine I use some very warm water in an old washing up bowl and a little washing powder, swill it around a lot and then rinse and repeat till it comes up clean, if you have access to an airline then blow it through as well. Then give it a light coating of the correct oil for the filter and it'll be good for another year.

I have never had a problem with the cone filters that people talk about, on a dyno some heating issues may be noticeable but when on the move I've never had a problem (and it'd be dead easy to duct some fresh air to them if you're concerned about it). Only car where we had a problem was the original S2 setup, and that was traced to requiring a longer intake pipe after the filter to restore the missing torque.

Edit> Ooops, didn't realise how long ago that post was []