Hi everyone, My 34GTT recently changed the air filter from the blitz sus power air cleaner to the blitz advance power air cleaner. After that the car start running funny. about 1/2 throttle hit 3500~4000 rpm car suddenly lost power for few second and the rev stay at that for few second and start go up again, the rev is kind of like misfiring or boost cut (sorry I am still a noob about my car so cant tell) but it never happen before. Car had done the major service about 15000km ago and had my boost controller proper tuned on dyno , with all the new plugs and coil pack. I am suspect about the conflict between the boost controller and the new air filter,(boost controller is the HKS EVC6) because when I switch off the boost controller the car run fine when I turn it back on it happen again. Just want to know does it happen to anyone else, and is there any solution to solve it. Thank you