NEED HELP

i have a sirio evo 3 , i use SH7 plug , 16% tornado fuel on a G4s gears : 19/24-51/46 , body blitz alfa romeo . surface temp 40C air 35-40 , the engine runs 120C with out the body and its too powerfull torg and speed , with body 150-160C and im loosing power torg and hi speed , by opening the main needle i loose more power , what should i do to have the same power and temp as with out the body