Don't know if it matters now, but I felt that my car would hesitate a bit as well when it was new. Now, 2 months and 2800 miles later, I don't feel it hesitate. Runs like a champ!!!
Seems like everybody is over-oiling the K&N...it happened to me when I had my Tacoma. I guess Toyota took pity on me and only charged me $200 for a new MAF