Soooo my car on start up struggles to get going and sometimes makes a blowing pop type noise out of the CAI. I took her to Advanced Auto Parts because of the check engine light that randomly came on. His code scanner said it 'could' be the timing chain, timing chain sensor, or something else... I ruled out the chain because if it had slack you could hear that kind of noise. I replaced the sensor... And the problem still occurs. Any help will be very appreciated!