It is true, all the good "traction controls" retards the timing, in relation to "spinup", and is unnoticed outside the car. Mine has 4 timing curves, and doesn't cost 4k, it's built in the ign module, and is programable with a laptop, or netbook. For under $400.00 you get everything but the spark plugs, or you can buy it with a "recommended" set of curves, for less money, and send it back to have them changed. This is not for factory ign, but does work in conjunction with what Ambrose refers to. Bob