mine got 80 miles a day round trip for 3 years put on it, and I usually averaged about 22-23 mpg on the highway about 75-77 mph. When my wife and I drove to California in November 2003, we got 25-27, but I'm pretty sure the computer put it into a fuel saving mode of some sort, because the car is usually very consistent at the track and it keep getting faster by 2-3 hundredths each run (richening up the mix I'm assuming).
Derek
__________________ 1970 Nova SS Clone: 383 SBC on 93 swill, 3600+ lbs., 11.12 @ 119.77 mph N/A, quicker on the jug... 2000 Formula: MACS, ORY, Magnaflow, !EGR, !AIR, Formato tune, stock long block, trans and rear end, still slow 2004 GMC Sierra 1500 ECSB 5.3: Magnaflow CB, K&N CAI, Formato tune, what I haul s**t with 
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