The part# is printed on the bottom of the dyno sheet. K&N must be fairly confident in there claims, so confident in fact, that they GUARANTEE their product to increase Horsepower. Tough claim to make if they were full of bunk! EH?

K&N hereby warrants and guaranties to the original retail purchaser of any K&N air intake kit that the vehicle on which the air intake system is installed will gain an increase in horsepower, or K&N will refund the purchase price, including sales tax, to the retail purchaser, subject to the following terms and conditions:
[ul][*]The K&N air intake system must have been properly installed on the vehicle in accordance with the included K&N instructions.[*]The system must be the correct part number for the vehicle upon which it was installed.[*]The vehicle must be in good running condition.[*]The vehicle must undergo a dynamometer test both before and after the installation of the system, with no changes to the vehicle, except for the installation of the kit. The dyno tests must be performed by the same testing facility and must be performed within 30 days of one another and within 60 days of the date of purchase. The test results or work order for each test must reflect the name and address of the vehicle owner or operator having the test performed; the year, make, model and mileage of the vehicle being tested; and the horsepower results from both tests.[*]If the dyno tests show that the vehicle did not gain an increase in horsepower, then the retail purchaser must return the complete air intake system to K&N in its original packaging, together with his or her proof of purchase, the ORIGINALS of the two dyno tests statement requesting a refund in accordance with our Horsepower Guarantee. Upon receipt of all of the foregoing, K&N will refund the full purchase price, including sales tax, to the original retail purchaser.[*]This guaranty does not apply to any other costs incurred by the purchase, including, but not limited to, the dyno tests, parts and labor for the installation and removal of the air intake system, shipping costs, rental car, loss of use or incidental damages, if any, and K&N expressly disclaims any and all liability for same[/ul]

 

Well,
thanks for sending me back to look at that pdf file
from KN again,
because I missed the the
"weasel words"
about
27,526 miles
on the first read.

What that KN dyno is claiming to show
is that if you run a 2004 Ram 5.7 for
27,526 on the factory installed paper air filter
so that it is quite plugged up
but still 2500 miles short of the recommended 30,000 mile filter change
then put on a fresh unused KN filter
it will show zero HP gain wide open throttle at 3200 rpm and below
but about 8 HP gain wide open throttle at 5392 rpm.

The KN ad guys are actually more tricky than I thought
by listing this mileage but not explaining what it means
so that if the US FTC attorneys were to sue them
they could state in court that they are not claiming that their filter
gives a 8 HP gain against a new paper filter
just against a typical Dodge oem paper filter with 27,526 miles on it.

My E KY born grandmother used to have a favorite saying:

"Figures never lie
but Liars always are Figurin"