whats up so i notice when im in 2nd if i wot at 4k car feels sluggish and once it hits 5k car feels like it gets kicked in the ass and accelerates like it should my car isnt throwing codes although i am running al 605 platinums on a 3.6 headers intake and tune i bought some tr55 plugs going to put them in later to see if thats the problem any suggestions?