[john d]

An update/clarification to my 10/10/05 note above:
Assuming "comparable fin surface area" was WRONG!!; my SRX V8 air filter has 20 folds @ ~4"x1" + 20 folds @ ~4.5"x1" = (80+90)*2 sides =~340 sq in;
my Concours air filter has 71 folds @ 7.375"x1" = ~523*2 sides =~ 1046 sq in;
so instead of a 75:55 ratio more air, the Concours has a 1046:340 ratio more air filter surface than my SRX N* V8 !!
Q?? How/ what effect does this have on the intake air monitoring devices??

How does the fresh air intake snorkle openings compare?

 

[john d]

to robhersch-
Do you think removing the filter and box for a few timed runs 0 - to whatever against identical 0 - to "same" whatever's with the filter and box connected be a reliable test for evaluating K&N types of aftermarked intake filters? Thanks for the intake snorkle info.