have to agree there. i started with a gutted stock airbox, then went to the ebay Injen clone for like $30 shipped, then upgraded to a real Injen intake, and now im finally content with the AEM intake.
in all truth, i noticed a very small gain when i 1st gutted the airbox. but since then, i havent noticed any difference when i put the fake injen on, the real injen, or the aem. i just didnt like the 2 piece design of either the injen, or injen clone. wanted a cleaner look. thats why i went with the AEM. plus the AEM puts the maf sensor out of sight in the fender well which cleans up the engine bay that much more.