trans slip? or engine hiccup?

I have an '04 LB7 with a Banks Six Gun Bundle(Ram Air, Monster Exhaust, BigHead wastegate acctuator, Six Gun Tuner w/ SpeedLoader) and before the intake and wastegate acctuator were installed the engine seemed to "hiccup" when i really got on it. I thought this was just the engine begging for more air from the stock and insufficent air filter and believed this would stop once the ram air intake was installed. After installing the intake the same thing happened. Is this my torque converter slipping or is there soemthing wrong with the motor?