yeah, he's got it. You take the screw off the "bottom" of the pipe (the part that is closer to the front) and take off the cable tie that attatches the stock pipe to the rubber coupler. Then simply put the resinator pipe into the coupler the same way the stock one did, then screw it in again, the same way. set your needles back to factory settings and retune as the new pipe will be slightly different in performance. And then kick ass on your biddies stock tmaxxes. =]