RAYNOR

CAN ANYONE HELP? I'VE BEEN READING ABOUT THE CEL FIX FOR REMOVAL OF EGT SENSOR DUE TO DECAT ON NEW AGE WRX, I HAVE REMOVED ALL CATS AND CAR IS RUNNING SOUND EXCEPT LIGHT COMES ON NOW AND AGAIN ON MOTORWAYS AND I GET IT RESET, FAULT CODE IS EGT, MY QUESTION IS THAT MOST PEOPLE SAY A DECATED CAR DOES NOT NEED THIS SENSOR SO BUNG HOLE AND PUT A RESISTOR IN, I HAVE BUNGED THE HOLE BUT NOT PUT A RESISTOR ON YET, NO LAMP ON BUT THE CAR IS USING MUCH LESS FUEL YET PERFORMANCE IS NOT AFFECTED,ANY ADVICE