Can anyone help? I just installed a turboxcess down pipe, cat, midpipe and currently using my stock exhust. I also have an injen cold air intake. I drove 3 days out of the week since the installation (last weekend). My check engine light came on, and the car felt slightly sluggish. I figure it was the exhust mod I did, conflicting with 02 sensors. Can anyone help to confirm or deny my hunch, and or just tell me I am all jacked up! Thanks!