I recall Josh saying it smooths the steering out; I know some where recently on his thread there was some info about it. I know it was brought up on MyTsn.com and they said it was best on Foam/Carpet. I haven't tried it but I plan too see what it does with Foam/Asphalt. I also know it was said if the car takes a hard hit to the front end it (at the wheel) it can wreck the steering knuckle due to the extreme angle of the linkage.