TORS isn't unreliable. its a safety system that on the carb so that it will kill the enging if the throttle ever sticks. it uses a switch on the throttle to see if you are pushing in on it. if you are not and the engine is still revving up, it will shut it down.
it is often mis-diagnosed as a problem starter. rarely does it ever cause a problem. no, it's removal does not improve performance at all.