Funny thing about this mod is that it cost about $5 and it made a huge gain in performance very noticeable. Ive said it before its like you can flip the switch off at about 60 and the car will just pull and pull untill you let off the gas or you hit max speed. As far as the seat removal I didnt have any problems with the seat there however Im 6 foot and weigh about 135Lb :D so Im not exactly a big guy. Very easy to install though took no time at all. Plus I found the perfect switch for it at radio shack and mounted it to the right of the cig lighter. Damn thing looks like it was built with the car :thumbsup.