anyone bought or built a good cold air intake for the XKR? the stock unit is dismal in design. want to start upgrades with intake and exhaust before moving to tuning and blower work.

 

No its not. You can change it, but you wont demonstrably improve it- which is why you cant simply find an aftermarket one.

 

Chris, at Mina Galleries, has asked me to bring my car in to his shop as he wants to develop one for our cars. I just haven't had the time, but have told him I will get it to him sometime soon.

 

 

I've had K&N filters for about four years now, never had a problem with oil, dirt or debris.

 

I'll believe the K&N marketing hype after you show me the data from an unbiased source that is proof of a performance increase over a stock Jaguar X150 at 1,000 RPM intervals from 2,500 RPMs to 6,500 RPMs. Ain't gonna happen .

If the oil soaked foam element actually worked, don't you think Jaguar and all the major manufacturers would be using it today? That's exactly what my 1960 Corvette came from the factory with - a reusable oil soaked foam element. GM abandoned that in 1965 and switched to disposable paper element filters. Why? New technology paper filtered better with less restrictive airflow and produced more HP.

K&N is living in the past. Performance increases, if any, occur only at WOT and the highest RPMs with a freshly-oiled filter. If you let it go for 25 000 miles before cleaning and re-oiling it, just imagine how much crud is getting through and mucking up your engine.

Your car, your money, your choice.

 

Hats off to Karen&Nancy though, who would have thunk that die-hard more-ons would never question why primitive technology is being sold for 20times what it previously sold for.
These are the guys who think anything premium is a scam.

 

Add in that K+N compared their new filter to a dirty old caked solid paper filter and you have all the info you need...

 

 

K&N = turbonator. Don't fall for it, don't put dirt into your engine.

 

That test used a K&N "Panel Filter". Is that the same thing as the K&N million-mile washable and reusable filter that is refreshed with oil?

That K&N "Panel Filter" makes more HP and torque by being less restrictive than the OEM filter. Less restrictive means more airflow and, most likely, less filtering and more crud in the intake.

 

 

Ha ha ha!!
The only thing you want to filter for is carbon and actual abrasives- not even on that test.
Actually, soot is there, but miraculously its at 0!

 

Mine has K&N's fitted by the previous owner.

Yes CJ's oil analysis was fine but surely the better way would be to do dyno runs with both clean oem/aftermarket paper and K&N, I remember reading conflicting reports on dyno gains, but there was little to no difference with the greatest being 8bhp

What OP/Southerngearhead hasn't told us is which XKR he has? important as 5.0 engines have two filters and 4.2's have just one...so he really needs to add that so that accurate advice can be given.

My preferred choice would simply be to use aftermarket filters bought for a few ££'s and change them every 6k miles

 

 

facepalm.jpg

Is this another pearl of wisdom from your "Jag master" ???

4.2L X150 XKR has a dual intake.
4.2L X150 XK has a single intake.
5.0L X150 XKR has a dual intake.
5.0L X150 XK has a dual intake.






The stock 4.2L XKR intake with new paper filters is good for ~500hp, as demonstrated on my XKR.
The stock 5.0L XKR intake with new paper filters is good for >600hp, as demonstrated on u102768's XKR.

It's not the air filter panels which would be causing restrictions in these cars, unless they are very dirty...

 

The stock system is already a cold air snorkel intake.

Aside from body work changes and a ram air I'm not sure there's much room for improvement.

I bought a car once with a "cold air intake", they removed the factory Porsche snorkel intake, and put a cone air filter just off the throttle body - in the hot air of engine bay.

I think a lot of people do not know what a "cold air intake" is...

 

And just to add an observation:

At my last visit to race the runway I noticed some cars essentially using women's nylons stretched over their cold intakes. All in hopes of bettering their times and speeds. I think it was capable of keeping out birds, gravel and insects.

Not too sure I would like this approach on my car for the long term.

 

There's a positive here as you can use this as an excuse if your wife finds them in the glove box. LOL

 

Sorry oh master of the universe!