u mean this ????
As a special holiday thank you to our fans,
we are leaking the exclusive URL that gets revealed when you complete the K&N Challenge Series.
This URL comes to you courtesy of the EA NFS team in collaboration with K&N Air Filters and is coded to unlock special discounts on K&N's full line of High Performance Air Intake Systems, High-Flow Stock Replacement Air Filters, and Wrench-Off Oil Filters for a limited time.
Aim your browsers at: 
and take advantage of the smoking deals there while the promotion lasts.
CONTEST by NFS
