screamin chicken

Ok I just installed a LS6 intake, my car has been tuned for a cam, and I have the air pump and smog taken out and turned off.I just installed a LS6 I am hoping I don't need to get re tuned for this but I keep throwing a code that says Map Baro, can someone tell me where to check to fix this I may have forgotten to re hook something, Also my evap. is incomplete is this because of the tune??????