Hi Guys, I have to change my air filters. The engine being compressed, a high performance filter can it offer something more? I think about the XKR-S filtre, they must necessarily allow a better air flow than for the 4.2L no ? In OE aftermarkets, they have the same reference for some. If not, is there any way to gain performance with specific airboxes or K&N style filters? Thank you for your feedback.

 

As far as I know xkrs is the same identical size and from the looks of it is of the same construction so I can't see it flowing more. Best bet is to modify a larger filter with housing from another vehicle , or you can always go kn type of filter.

 

Read this old thread, especially Brutal's post #8.
https://www.jaguarforums.com/forum/x...esolved-92749/

 

[font][font][QUOTE = Stuart S; 2124059] Lisez cet ancien fil de discussion, en particulier le message n ° 8 de Brutal. [/font][/font]
[font][font]https://www.jaguarforums.com/forum/xk-xkr-x150-33/xkr-engine-air-filters-change-issue-resolved-92749/[/font][/font][font][font] [/ QUOTE][/font][/font]

Thank's

 

Stuart this is incorrect, you can run with aftermarket filter with no problems as long as you don't mess with maf tube size. I know ppl running kn cone filters and have no issues on our cars

 

If a Matched Set is so imperative, wouldn't even a portion of a wayward leaf that got sucked up into one airbox and not the other create major havoc? Certainly real-world situations would preclude such a requirement. The curb-side of most roadways is a bit dirtier than the other, so that side filter would invariably get at least somewhat constricted more-so than the other. Certainly more than mismatched media.

 

Yes you are right . When I run diagnostic mode I can see the exact amount of air per each MAF sensor , and most of the time they are different reading by 5-10% and not identical and I get no codes.
I believe as to the maf issue cel light that others get with aftermarket large intake tubes, when upgrading to a larger tube our MAF units must be rescaled , I have this specific map and maf can be easily rescaled with it according to voltage.