Will this K&N actually do anything?

spurs fan in a coupe · Post by **spurs fan in a coupe** » Thu 13 Nov, 2008 18:59

Hello.

Will a simple £65 actually make any difference to my 1998 2.8 ?

Heres the link

http://cgi.ebay.co.uk/K-N-INDUCTION-KIT ... 240%3A1318

thanks

Post by **Robert T** » Thu 13 Nov, 2008 19:48

From other peoples experiences on here, yes, it will the oil in the filter will knacker your MAF. There are other solutions which are better suited to the zed: Fogged Airbox and a few solutions that feed air from the front foglamps.

BTW I do have a K&N on my "other" car - but it's engine management system is too simple to need a MAF.

Cheers R.

AntMan · Post by **AntMan** » Thu 13 Nov, 2008 20:12

I run a filter on my 2.8 and it does make a difference but it's important to make sure it gets cold air to get the best out of it.
The oil on the k&N is to good for the maf sensor why not try an itg filter instead.
I had a heat shield made for mine and the filter remains cool and it work well.
Thread here.
http://www.zroadster.net/forum/viewtopic.php?t=18624

markrnorton · Post by **markrnorton** » Tue 06 Jan, 2009 10:17

does this apply the same to the 1.9 ? is it just the oil in the filter that affects the MAF ?

Post by **Robert T** » Tue 06 Jan, 2009 10:59

markrnorton wrote:does this apply the same to the 1.9 ? is it just the oil in the filter that affects the MAF ?

Yes, the MAF works the same way in all the models, and it is the oil in the filter that does for them. And by the smell of the one I've just taken off my classic, I'm not surprised - it smells very oily indeed - the house still stinks of it!

Cheers R.

markrnorton · Post by **markrnorton** » Tue 06 Jan, 2009 11:26

so if the oil was cleaned out/off the k&n would this be usable then ? or does the oil catch all the particles ?? would the cotton gauze be enough to filter on its own ??

sorry for all the inane questions, i just dont want to fit it , if its gonna cause a future problem

Ferdinand · Post by **Ferdinand** » Tue 06 Jan, 2009 12:03

I know a lot of Alfa Romeo guys, and they used to buy K&N's but all switched back to airfilters - because their garages said K&N would do something to the MAF.

I've used K&N's since 1997 on a Alfa Romeo 75, Citroën XM, and on our current cars - and I've never experienced any problems.

I know that people says the oil from the filter gets "foggy" and leaves some sort of coating/residue on the MAF - Periodically, there's a cleaning cycle during which the wire is heated to a very high temperature right after engine shutdown. This burns off deposits.

how about cleaner like CRC Mass Air Flow Sensor Cleaner - has anyone tried it?

Post by **Robert T** » Tue 06 Jan, 2009 12:07

Looking at the K&N one I have here, I think the oil is fundamental to the way the filter works - it has a two layer zigzag (for want of a better word) mesh with a thin layer of the oiled material trapped in between. Without the oil the material would be too thin on its own to act as a filter. On suitable cars they work well as they offer a large surface area which offers little resistance to the air, just not on cars with a hot film MAF.

I would look at other makes of filter as AntMan suggests as the MAF is quite an expensive component to have to replace.

Cheers R.

///M Breadvan · Post by **///M Breadvan** » Tue 06 Jan, 2009 15:58

i ran with a K&N filter on my Alfa 155 for over 100K miles without any problems. Not sure if mine had a mass air flow meter though??

BenZ3-2.0 · Post by **BenZ3-2.0** » Tue 06 Jan, 2009 16:09

If you want to improve air flow I think think the best bet would be a Gruppe M rep or similar. I have a proven 18bhp improvement from that and a re-map on a 2.0

Post by **Robert T** » Tue 06 Jan, 2009 16:17

There are several types of MAF - the two I know are the hot film (as in the zed) and the hot wire. From other people's experiences on here, the hot film ones don't like the oil in the K&N filters. It may be that the hot wire ones used on other cars are be fine with it. And I doubt the MAF type can be changed as the engine electronics/software is matched to it.

Cheers R.

Greigboy · Post by **Greigboy** » Sat 21 Feb, 2009 19:35

My Z3 2.8 has done 40,000 miles with a k&n induction kit fitted and it has caused me no problems, I recently cleaned and re oiled it.
I find the filter makes a signifficant difference to the performance and gives a great induction roar under aceleration and complimets my superchip perfectly.

Justin Time · Post by **Justin Time** » Sat 21 Feb, 2009 21:44

Mike F's post is all you need to keep your MAF healthy, increase lower end grunt and increase acceleration at higher speed. The limiting factor isn't the air filter originally installed on the Z3, as is explained by Mike, only the route by which it is delivered to the filter.

The cost of a replacement MAF is roughly £150 IIRC (from Coopers Tunbridge Wells) just for future reference.

SpunkyM · Post by **SpunkyM** » Sun 22 Feb, 2009 16:47

Periodically, there's a cleaning cycle during which the wire is heated to a very high temperature right after engine shutdown. This burns off deposits.

I think what actually happens is that it burns off the oil and leaves a deposit - just like if you burned oil on a fire.

And I doubt the MAF type can be changed as the engine electronics/software is matched to it.

Will be fine. ECU will adapt to it automatically.

TIMMZEY · Post by **TIMMZEY** » Wed 11 Mar, 2009 21:00

Edited for privacy

ZZZEMMCO · Post by **ZZZEMMCO** » Fri 13 Mar, 2009 18:47

With the Exdos Mod in the airbox and K & N filter, NO probs in 3 years, including meister service with all checks every year on 3-4K milage.

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Will this K&N actually do anything?

Will this K&N actually do anything?

is there a cure?

Keep it simple(like ME!!)