this cant be right

just finished 1jztt into my ma70. have searched but am hitting a wall. it runs but only to about 2000 rpm saw somthing about re/cal on tps but it was never removed. also engine did not come w/ map sensor. got one off a 95 celica GTS but i'm concerned about the calibration. I'm a new be but also have a very,and I do mean very loud whistle when the engine quit's pulling.any idea's? got aftermarket intercooler, complete stainless downpipe but otherwise stock HELP!