Tuning Replace Standard K&N Filter

[Jampa]

Hi everyone,

Does somebody has some experience with the replacement of the standard airfilter with a K&N filter or something?

Does it change the sound or performance?

[ante00]

this will help and you should use search

http://www.civinfo.com/forum/engines-transmission/109-induction-kit.html

http://www.civinfo.com/forum/engines-transmission/6574-k-n-typhoon-kit.html

http://www.civinfo.com/forum/engines-transmission/8919-injen-cai.html

[Jampa]

Thanks, but I already saw those topics.
Thats about the typhoon kit, but I like to have some information about this one..

[Nick7]

No, it will not change performance, and no, it won't change sound.
Actually, I lie.
It all does change, but for such small amount that it is not possible to hear or feel any difference at all.

[Jampa]

So, it's not that worth to buy and place that thing?

[Unknownsoldier]

It is, if you want to save money on buying filters for every service, I found mine were being changed by BMW every time the thing went in, until I changed mine to K&N, then it was fine, saved em' keep charging me.

Tom

[civicfan]

Originally Posted by Unknownsoldier

It is, if you want to save money on buying filters for every service, I found mine were being changed by BMW every time the thing went in, until I changed mine to K&N, then it was fine, saved em' keep charging me.

Tom

Yes but beware, I've lost one K&N at service in Poland - they threw it away because it was "oily" (it's a wet filter so it must be oily - they did not even know such filters exist). There was a warning sticker on the box but in English

[civicfan]

Originally Posted by Jampa

Hi everyone,

Does somebody has some experience with the replacement of the standard airfilter with a K&N filter or something?

Does it change the sound or performance?

The sound did not change (I used to have one on a Daewoo Lanos and later on a Citroen Xsara, both petrols LPG converted), the performance improved only marginally, but LPG consumption was about 1 l/100 km less than with the standard filter. It's a good investment as long as you leave it alone (don't clean or re-oil unless you drive in the Sahara ) and unless your service throws it away - see my other post. With time, it comes even cheaper than the standard filter

[Jampa]

Ok, it's a leasecar..so for maintenance it doesn't matter.
I hope the sound or/and the performance changed, but thats only marginally.

I don't think it's 60 euros worth then..
(or is it?)

[TTDegs]

Personally I wouldn't - but there is a growing band on 2.2 owners who would probably disagree with me

[Unknownsoldier]

On a diesel it's a waste of time, a diesel should be run on a tight-suck of air to get full potential, and petrol needs to run on a surplus of air for best performance. So for a petrol yes it's good, diesel not worth it. I found my MPG improved with the K&N, but not much else (2.2, 24 valve petrol BM'), possibly not enough difference to justify purchasing one, but hey it's your choice.

ATB,
Tom

[nortones2]

IIRC, diesels run on a lean mixture. There's nearly always an excess of air. Fitting a filter that might let even more air into the engine is a waste of time, as it won't make the slightest difference, except for over-oiling the MAF. Petrol engines are run at about stoichiometric, but richer when throttle is WO. Regulated by the sensors and the ECU: any improvement is debatable. As for the prime purpose of a filter: to let air pass but stop grot. Well it doesn't really matter on a race engine, I suppose, if the filter is less good at its job for a couple of races, and spatters the MAF with gunk I'd rather keep the grot and the grease out on my more mundane vehicle, thanks all the same.

[philippeclement]

Originally Posted by civicfan

The sound did not change (I used to have one on a Daewoo Lanos and later on a Citroen Xsara, both petrols LPG converted), the performance improved only marginally, but LPG consumption was about 1 l/100 km less than with the standard filter. It's a good investment as long as you leave it alone (don't clean or re-oil unless you drive in the Sahara ) and unless your service throws it away - see my other post. With time, it comes even cheaper than the standard filter

Yes, i totally agree with this ... Had an Opel Astra 2 L 16 Valves (Petrol) and simply consummed 1L to 2L /100km less than with normal filter, but one the performance ... Nothing at all ! Won't feel the faintest difference what so ever.
But for Diesels, i don't know and many guys will not advise this investment for the diesel cars as diesel air take should be choked to the minimum compared to the petrol cars. I must study this and see why !!?

[Jampa]

Ok, thanks for all the information..

I guess it's not that worth to buy a filter for 60-70 euros for a lease car. (it's a petrol engine).

I hoped that the filter improved the sound of the engine a little bit and the performance. I think the only way to improve the sound or performance is to add a open air filter or exhaust.

Unfortunately because its a lease car, thats not allowed..

[civicfan]

Originally Posted by philippeclement

Yes, i totally agree with this ... Had an Opel Astra 2 L 16 Valves (Petrol) and simply consummed 1L to 2L /100km less than with normal filter, but one the performance ... Nothing at all ! Won't feel the faintest difference what so ever.
But for Diesels, i don't know and many guys will not advise this investment for the diesel cars as diesel air take should be choked to the minimum compared to the petrol cars. I must study this and see why !!?

For the savings (over a high mileage, obviously) and for the possibility to leave the filter without servicing almost indefinitely? I guess there won't be a problem with a modern diesel in getting "too much" air