All is not as it seems it seems. After tallying up the numbers I'm getting the same 19mpg (13 around town) I was getting with the 4.56's =P Its the same story with the Skylark, I've tried a variety of gears from 3.08 to 3.89 and the car gets the same mpg. I'm guessing though the 80mph plus some pretty high winds offset any likely gains of a lower cruising rpm.
I'm going to try some different fueling strategies with the injection. I've switched it to finish injecting fuel just before the intake valve opens at lower rpm and throttle. I've been running only injecting fuel when the intake valve is open and as much as possible while the exhaust is closed. I also re-ran the compression tests, and the worse one is 12% off, but its always been that way (not surprising how crappy the bores and valves look), but I decided to take those numbers and put some minor fuel trims in each of the cylinders figuring if they are not all pulling the same amount of air they don't need the same amount of fuel. I'm tempted to wing in the ignition timing trims too. Its practice if nothing else.
I also noticed I had my TPSdot(sensitivity) set at a ridiculously high 120, so I lowered it to 20 and not surprisingly it got more zing off idle.
I'll do some datalogging this week going to work and see if I can further optimize the tune at cruising speeds.
