I installed a short intake on my 2005 chevy silverado 1500 5.3L V8, the intake is a K&N straight out the front of the throttle body. the set up goes throttle body - mass air flow sensor - k&N filter now my codes are popping up for P0171 Bank 1 Lean and P0174 Bank 2 Lean. I do have a Bully Dog programmer that is set to performance for the motor and also have a throttle body spacer. that is all the upgrades I have. has anyone else had this issue or can help me out?