Silver Lightning

I have a 2009 Cobalt SS with the following mods; K&N Typhoon SRI, Injen Intercooler Tube, MPX 3" SS Exhaust w/Spun Cat, MPX Pulley and a Superchips Cortex program with a 91 tune. The problem I'm running into is I'm throwing a CEL. I ran a diagnostics which revealed the following engine code: Engine Code # P2096 Post Catalyst Fuel Trim System Too Lean bank 1. Has anyone experienced this, if so, any suggestions on how to rectify the problem.

BartSS

Yeah its your shitty Cortex tune making the car run lean.. get a real tune

OR your O2 sensor is going out

Silver Lightning

Thanks for the info. Which tune do you recommend?