The best thing is to go for a cruise on the hwy/freeway with almost no stops. Then as one person drives the other starts to play with the fuel maps.
I wouldn't play with the maps with the load settings over 50% as this will most likely affect your performance rather than cruising. After mine was set on the dyno i had the same problem that i seem to be running alittle rich. Mine didn't have any jerking though. I would recommend you getting touch with hitman. He did my economy tune and didn't try to rip me off, or over chrge for the service. He's in sydney. Mobile is 0417259391
ring after the new year as i was getting him to do some of work for me and he told me he will not be doing nything until after the new yr.