my 1996 j-spec supra
 

hey can someone please help me? I have a 1996 J-Spec Supra tt and it keeps cutting off on me. the engine runs smooth I can cruise all over town but once I try to boost hard it cuts the engine completely off.

some of the thing I have tried: I disconnected the batteries for fifteen minutes to see if I could get the check engine light to turn off but it remained on and the problem remained. I changed the coolant, the oil, thermostat, water temperature sensor(the coolant temperature gauge isn't reading anything its not even registering) I really don't have any idea of what is going on this is my first turbo vehicle any help would be great the car ran great when I bought it I stop driving it cause it was to much power for me to handle now I can't even feel anything

can anyone help me?