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[gsizoli]

Hi!

Does anybody has any information related to K&N air filters?Any problem, any positive or neagtive experience? (power, fuel cons, doesn't cause any prob to MAF in long period?, etc)
Br
Zoli

[Elite Pete]

I've heard that the oil from the filter knackers the MAF.

[tigers_gonads]

standard vx or maybe a green cotton panel filter works seem to work best on omega's mate. 

cone filters tend too draw too much hot air from the engine bay. 

the oil that you spray onto a k&n filter can cause big problems with the hot wire in the maf.

[Grumpy]

As Elite Pete said.

But also, why bother?
The original filter is big enough to allow an unrestricted
airflow to your engine, it filters the air just as well
and it's cheaper.

Why pay good money to fix something that ain't broke?

[Turk]

Yep, standard Vx filter 

[Marks DTM Calib]

Only thing you will get with a different filter is more induction noise.

[pedroMV6]

Slightly different animal, but the K&N panel filter on my Carlton is much better than the standard offering from GM...........

[KillerWatt]

Only thing you will get with a different filter is more induction noise.

And increased fuel consumption (assuming the ECU corrects for the extra air coming in).

The above of course only applies if the OP is talking about a performance filter, rather than the direct replacement option.

[Andy B]

....
 for the extra air coming in). ......

That's assuming you do. It's generally accepted that you can't do any better than the OE airfilter & housing, especially as it's feeding cold  air from outside rather than warm air from under the bonnet.

[NiallyV6CDX]

The best way to modify the air intake on an omega is take out the airbox, remove the grille and pull out the plastic ducting that goes from the box intake hose to the middle of the grill just infront of the radiator (where the air can get rather hot!  ) put the box back in and reroute the flexible hose from it down behind the headlight to the small grilles next to the foglights (where the air is nice and cool  ).
Feedback seems to be the standard Vx filter panels do an ok job when renewed on time.
As for cones, unless you rout it properly to a space with cold air (like next behind the foglight grille) you keep getting hot air so don't get anymore power, just more noise. But it is a nice noise.
Haven't had any troubles with the MAF as of yet but then the cone wasn't on for that long and it had been used before so probably wasn't as oily as a new one.

[NiallyV6CDX]

....
 for the extra air coming in). ......

That's assuming you do. It's generally accepted that you can't do any better than the OE airfilter & housing, especially as it's feeding cold  air from outside rather than warm air from under the bonnet.

Thats what I thought untill I looked to where the intake pipe goes to. About an inch infront of the radiator!  :-/

[NiallyV6CDX]

Only thing you will get with a different filter is more induction noise.

And increased fuel consumption (assuming the ECU corrects for the extra air coming in).

The above of course only applies if the OP is talking about a performance filter, rather than the direct replacement option.

Not true either, I found my MPG went up about 5%.
If its getting hot air the AIT will reduce the fueling to suit the thinner air, so its hardly going to reduce fuel economy, just performance.

[Andy B]

...... About an inch infront of the radiator!  :-/

So when you're moving  your ducting will get the air first. If it was an inch behind .... then you'd have a point!       

[KillerWatt]

....
 for the extra air coming in). ......

That's assuming you do. It's generally accepted that you can't do any better than the OE airfilter & housing, especially as it's feeding cold  air from outside rather than warm air from under the bonnet.

I wouldn't dispute that for one minute.

Simple fact is that the manufacturer invested £ millions in the design, and none of us are going to make a better job of it as a general rule.

[Andy B]

....
 for the extra air coming in). ......

That's assuming you do. It's generally accepted that you can't do any better than the OE airfilter & housing, especially as it's feeding cold  air from outside rather than warm air from under the bonnet.

I wouldn't dispute that for one minute.

Simple fact is that the manufacturer invested £ millions in the design, and none of us are going to make a better job of it as a general rule.

     exactly