Does your car shoot flames?
 

I met up with another Genesis owner last night. He has a 2.0 too. Not sure what all he has done to his motor, but he had an ARK exhaust. When he would rev the car, small blue flames would shoot out of the techno tips. Not gonna lie, it looked pretty bad ass. They werent ricey fast and furious flames, but small short bursts of blue ones.

Eliminating your cats causes that.

My tib (I8aCobra's new car) I have a video of my Boy lighting a Cig off my Exhaust while 2 steppin! lol got to love Launch control that is only on igntion cut and timing retard!!! haha