OK, I just got sponsored by K&N and i installed the K&N Typhoon i got and i think i lost power after 6k. I have a the stock exhaust manifold, RB Duel Resonated Delete pipe, and a Borla Cat-Back. But before the Typhoon i had the stock K&N Replacement filter, and had a nice smooth power feel. now i feel like i hit 6k and my car hits a 30mph head wind. also i kinda go def once i go WOT with a vigorous rattling sound under the hood. i haven't gotten to a dyno to check but im getting much more lb/m then stock. Just want to know if the intake is adding the 11hp gain and 7 ft/lb to the lower rpm range like the dyno graphs say or adding an increase at all. if anyone else has the same symptoms with a similar set up, or any ideas on it would be awesome. also i added a rotor shaped cut for the intake ducting and im seeing 10 to 15 degrees IAT over ambient air temp. i was seeing upwards of 30+ before so in racing days that will help but im not a fan of mods that cause a loss of power or toque. Thanks