I think a lot of my issue is lack of overdrive. A lot of the swaps aren't necessarily done for daily driver duty either, so they tend to be a little more hopped up. Mine turns 3200+ rpm on the highway cruising 70. I have my AFR target set for around 14.7-14.9 at cruise. Was getting more like 15-16 before a bit of a retune, may be able to squeak a little more out with some more tuning, but it's been running well and I haven't driven it a whole lot lately, so I haven't bothered. I fiddled with it so much when I first did it I was happy to finally get a nice smooth tune and sort of left it at that.
I agree though, the numbers are a little lower than I expected. Granted, these cars aren't exactly aerodynamic compared to the more modern iron, even the trucks to some degree. I might weigh 750 pounds less than a new Charger/Challenger, but when I'm pushing a brick through the wind with an air dam up front it's just as bad if not worse.
