Just tried the hks, pure blow and it idles fine but the car feels laggy when changed gears with less torque. If stick in the recirc peice in, the fins have to come out so you loose the sound effect.
Done some quick logs, the boost is fine but the air mass meter seems to have lossed aroung 6-7m/g? Any idea how much bhp loss is that? should be sticking to my forge but sort of attached to the sound of the hks
May be selling it, any one interested