I have, almost, the exact same setup on my 03 Z! I've got a 165 main jet in and Dyno-Jet suggested that mixture screw be 3 1/2 turns out so that is where I have it. I also installed the replacement needle that came with the jet kit. We are essentially at the same asl altitude as well. But I'm having troubles with deceleration. It seems to load up.? Misfire, predetonate.? Any suggestions? I'm going outside right now to change my main jet to a 160 or 155. Hit me up if you have any tuning advice! Will ya?