Hey Nic! I missed your post while I was on vacation, just found it now. I thought it might be cool to show the tune results for a GXP in your post so people can compare. Here's my graph showing the before and after tune in one.
It was a GREAT vacation. I posted in my thread that I blew it though! On the way back from Waterton, we went through Calgary on a Sunday afternoon, so of course we stopped at Peter's Drive In. If I had been planning ahead, we could have had a Meet and Eat. We usually get down to Calgary a couple of times a year, so maybe next time, if you're up for a giant greasy burger, fries and a shake, we could meet up there?