So since I had sucked in a lot of water on my last outing (http://coloradok5.com/forums/showthread.php?t=170044), my truck has been pretty stumbly and not up to its full potential. But today, it seemed to run better until I made it do some highway duty for about 15mins at 3200rpm. When I got off the highway it idled higher than usual, like 1100rpm. When I got home I lowered the idle but then it came back up again. I then tweaked the idle mixture screws to a better possition then readjusted idle but it then came back up. All I can say it WTF? Oh and its a Holley 600cfm 4160. In about a week I am going to replace the intake manifold and rebuild the carb, but in the mean time, WTF?