....being from way the hell up here (Denver..over 5500 ft. above sea level). How much affect would this kind of altitude have on turbo set ups. A/F ratio...timing...how much boost you can get away with..etc. May be a stupid question, but I 'd really like to know if it makes any difference. All I can tell you is that 13 sec. at sea level = 15 sec. at 5000 feet (SUCKS hugh!!! NO AIR!!)

 

Actually with a turbo set-up, altitude doesn't affect as much as it would normally aspirated. But yeah our altitude does suck. I'm from Ft Collins so I feel your pain.