I got a set from Brent (newspeedmaster.com). I didn't notice a big difference, but the throttle response was better. The last time I did some long distance highway driving I averaged over 45MPG running at 75MPH.

Tom

Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)