On my 95' Cobra I just used the ol' trial and error method of adjusting it up a couple degrees and driving it to listen for pinging. When it started to ping I dropped it back down a couple degrees and left it. The only downside is that when you get a crappy tank of gas you have to stay out of it, or add a bottle of octane boost. The horsepower gains of a couple degrees is probably not worth the worry. I would stay with Steedas recommendation to be on the safe side if all the talk about the 2001's weak piston ring lands are true.