Thanks for all your input guys. Economy increased rapidly as I did some more highway driving. It seems to be around the same as you guys have suggested. I'm taking the phoon to autotech this week to have it inspected, and possible stage 1 package. Hopefully they can shed some light on this possible flash tune business. Last week I drove it until the tank was almost empty, range was about 10kms. Then I filled it with 98, reset all the gauges. The fuel range went up to 410kms, which is the highest I've ever gotten. Im through about a quater tank and its done 150kms already, mixed driving. I have a feeling that the dealer filled her with E10 before I drove it off the lot. I had not emptied the tank until now, been filling it with about quater tank left. I think maybe the left over E10 was messing up the economy. that's my theory anyway.