A quick heads up that K&N just released airfilters for the supercharged V6, part nrs are 333074 and 333075, MSRP is 56$ apiece.

 

K&N is at best waste of money, at worst is harmful to your engine by providing inadequate filtering and introducing warm air into your intake.

Stock cold air intake is not restrictive on Jaguar V6 supercharged engine, as such these filters could only do harm.

 

And sucking in oil that the cotton gauze is soaked it. One of the best rackets. Why dint we think of that. Especially since all air filters were once K&N style, we went to more expensive paper to avoid the problems created by oiled cotton.

 

Food for thought then: All current 911s come with paper air filters. Except the GT3 RS and GT2 RS.

These come with oiled cotton BMC filters as OEM.

 

Is there dynamometer evidence to prove any type of performance improvement from the K&N products?

 

 

Particularly after dirt has had a chance to stick to the oil. I would wager a pound to a penny, not.

 

Yes because its decidedly not a car for everyday/ everywhere use.
Its the polar opposite of an f-pace.

 

When I shop for a used road car (track car is different), if I open the hood and see K&N I walk away. Seeing one tells me that owner is a) not knowledgeable about cars b) was modding the car. a+ b is dangerous combination, and makes one wonder what else is there. Plus, who knows if the filter was ever re-oiled after it was installed, so it is likely the car was run effectively without filter.

 

Proper care of K&N is a maintenance item in and of itself. While you may find people who put them in a forget them, you'll find plenty of knowledgeable people who swear by them and take care of them properly. I have them in several of my cars and have never had an issue or a complaint from anyone who bought one of my cars - including some prized enough to be trucked cross-country and/or internationally.

I know you won't be shopping here, but you can stop for a beer anytime and see the Doctor of Motors on my garage wall, anytime.

 

 

Your larger point is spot on, but lets get rid of the elephant in the room....
I would not put much weight on following what Porsche does. They are merely capitalizing on a public perception that was formed long time ago when they were ahead. Today no designer in his right mind would put an engine over or behind the rear axle- its the worst thing to do on many levels.

Yes a less restrictive filter would have made sense on a car which will need to have its engine rebuilt long before any wear from dirt becomes a problem. I.e. a race car.

With more Direct Injected cars on the road putting out incredibly aggressive and unfilterable by cotton, carbon nano dust, one is really gambling with the odds against them. Bear in mind, a new type of exhaust filtration law had to be passed to keep this new particle at bay.

 

Dont dare say that, the K & N fanboys will have you burnt at the stake!

 

The cost of a dyno that could resolve such a small change in HP is beyond most , unless you want to include NASA. All K&N say is an increase of around 1 -4HP and are not vehicle specific, so therefore have not tested their own product. The generic increase is what you would get from changing a standard paper filter at the end of its life anyway. Snakeoil

 

Best is 1st to measure your vacuum in the intake, that will tell if you can make improvements, on the supercharged cars any vacuum is costing power. You could assume that due to size restrictions and noise reduction that there is some power gain on the table stock levels, certainly more so once you tune your engine. If you keep your car stock then it may not be worth it (pending of course the vacuum readings). I have been only using K&N on mine for more then 450.000km, wouldn't want any other.