Must gain access to the ECU on the left side of bike behind the m109r panel and left aft chrome panel.Then remove the lower connector on ECU. On the back side of connector it is numbered , go to pin 23 it has a pink wire in that pin. Go aboutÂ three inches away from the connector and cut the pink wire. The end going to the connector strip and splice one end of the 2.7 K OHM RESISTOR to it . the other end of resistor splice about ten inches of wire to it so you can route it to ground. Add A terminal lug and ground it to the black bracket that holds the ECU, under the bolt that holds the black bracket works pretty good for me. This will make the BIKE HAVE KILLER THROTTLE RESPONSE AND TORQUE IN THE FIRST THREE GEARS ALONG WITH SUPERSONIC TOP SPEED.