Well, I got my ecm back from ARD tuning and there's definitely more power and it runs smoother but that's not what I worked with them for.
This is a tough one to A-B-A test so I'm not going to try to sell this one as fact and I have no long-term testing at all done
yet but I did drive it around town and my scantool and onboard computer are indicating 1mpg average better (and I know I'm down at least 2psi in the tires) but the big change was a short highway jaunt I just took. I used to see a max MAX of 30.2 mpg in sustained cruise-controlled 60mph on this stretch of road. Today both read 4.5 mpg higher both ways on the trip. I'll call it a win.
