No controller will ever make your car go faster (as in increase its top speed). It can make your driving easier or harder, consistent or less consistent, depending on what you use to drive with and how comfortable you are with it. I always get the impression reading this kind of posts where it is implied that one controller is "faster" so i thought it might me worth to mention this.
I haven't responded because i don't understand Fordman's question. Physics and setup options are same for everybody so there can't be talk of an exploit.
I could only guess why he is slow and why his wheel is turning. Maybe because it's a hard game that takes time and effort to understand game mechanics (in my case), or wheel setting are badly setup, etc. As for the wheel turning itself, i would say it is a combination of very high, soft oval-ish setup and engine crankshaft rotation causing enough of a force to cause micro wobbling of a stationary car and send Logitech drivers into confusion. Who knows.
Mouse is inferior to wheel in LFS in every way, assuming both are working as marketed. This includes using 720° degrees of wheel rotation. But I'm saving that for when it counts.