I bought and installed an aem cai. I also used my Cobb accessport to flash an aem stage 1 tune from the Cobb archives. When I drive normally I feel nothing which I'm not looking for anything since km casually driving. But when I "romp" on it obviously I get the suction sound that's normal. When I shift I get a swoosh sound which I herd it's the access air coming back out through the cai ... something to do with my stock bpv. Is that bad or no worries? Also I want to know if I should get bigger injectors and fuel pump to better even out the air fuel ratio? Or could I tune it with what I got ie. Stock injectors and pump? How could I get it better tuned to make it respond better to my throttle?