Remember that a "2 step" rev limiter and traction control are NOT the same thing. I think you are confusing the 2 and adding them together to get launch control. Unless I am mistaken (which does happen ) you are wanting both that only comes with very high end systems as has been said. Unless your willing to empty your pockets a number of times over you will either get a "2 step" system (most probably) or a traction control system which is much more expensive and requires many wheel sensors.