The EPA just announced.....

[Goat Blower]

You guys that think you need to run 92 octane because you got a turbo could save yourselves a decent amount of money right now. You only need 87 octane if you're not under boost or you turn the boost down pretty low. I think most DSM'rs are under the impression that you need high octane all the time, even if you're just loafing along on the freeway. Higher octane slows down preigntion(detonation), but if you're running a stock ECU, the ECU pulls your timing back a few degrees if it detects any knock. It will keep it there until it doesn't see any more knock and then only adds a bit at a time. So you can actually run the cheap stuff until gas prices go down to save on some coin, just don't be racing every fool that comes up at the light.