So after my thread a week or two regarding the lack of 91+ octane in Nebraska, I figured I'd feed my Linear some 89 here in New York to see what would happen. It seemed to run fine with no apparent knocking, stalling, rough idling, etc. However, I noticed that on the NJ Turnpike, when accelerating at the on-ramp from say 35 to 75+ mph my boost gauge would not poke near the red and I didn't have the usual spry acceleration I'm accustomed to. It felt like the car weighed another 800 pounds or something. I thought it was perhaps an ECU problem so when I got to my destination, I turned the car off for 30 seconds then fired it up again and took it back out, with the same results. I've since refilled with 93 octane (my usual choice) and full boost seems to be back for good. FYI, the weather was on the mild side, around 60-65F degrees, but humidity was high and it was overcast.