Blox Racing TPS for 2002-2006 Acura RSX Type-S / Honda Civic Si (EP3) - BXIM-10401Blox Racing TPS for 2002 2006 Acura RSX Type S Honda Civic Si (EP3) The throttle position sensor (TPS) is basically a potentiometer that provides a variable resistance dependent upon the position of the throttle. There are many different instances when one needs to be replaced. Consequently, in order to purchase a replacement your only options were to buy a brand new throttle body assembly from the local Honda dealer or to find a used one from a local