If I had a Brock's PC I don't think I'd be to concerned unless there is a big elevation difference from Brock to you. I don't have the Brocks, I've got a Ti-force and Pc and had it tuned Friday.It made a big difference everywhere, more midrange, more uptop, idles better, and quit sucking so much gas. It was running too rich with the stock pc. I removed my fairings and got it done for $250. Best 250 I've spent! More responsive everywhere. Anyone who thinks proper tuning is a waste of money is sadly mistaking.