i went to the dealer to get my car checked out.. well my ebay intake, turns my engine light on.. it sucks tooo much air for the C2censor to take up.. haha any ideas how i can fix that ?

&& also when i step on the gas, inside and outside of the car you can hear a air noise.. im thinking coming from headers/downpipe/catback(custom one).. that area.. like it has a leak or something, when i got the car it was bone stock and had that problem.. any ideas to what it can be ? im currently looking for after market HEADERS, DOWNPIPE,&& CATBACK EXHAUST.. maybe that would fix it ?