Belated thank you for the belated welcome! I recognize you from ecomodder. I spent some time there when I had a 2000 Sunfire for a few years. (2.2 5spd) My best tanks with that car were 41+ mpg on the highway doing all 70mpg +/- with enough coroplast and garden edging on the front to start a recycling business.
There were some delays in the engine swap but it's in now and I'm trying to sort out a running, or lack of running, issue. It'll start but dies out quickly unless I hold down full throttle, then it just limps along at a very lopey low idle with a lot of missing.
If you have any insight please stop by the thread I'd started an am about to update.
Thanks!
http://www.aveoforum.com/forum/f82/h...08/#post196594