I triggered my SES light finally after the last time over 4 months ago. I recently added a cat-back system to my ride along with a Injen intake(first time my SES light went off-due to throttle positioning error) had the SES light turned off and reset the ECU. My SES is now off.

My question is, would a heat shield around my filter part reduce the air flow to keep the sensors from going off?

 

who told you that you had a too much air code? the only time i could think that would happen is if you remove the filter. i run a 9" k&n filter and i have never had any issues with too much air. from my memory, the injen is a pretty small filter too.