[pepsihatman]

My friend's turbo'd saab definatly was faster in the colder weather. What I believe is that the intercooler and total system doesn't have to work as hard to produce the same temperature air when operating as it does in the summer. Cold particles = smaller particles = more particles shoved into the system (my take). Non-intercooled turbo'd setups definatly are more affected by weather though, and carbs definatly. My old rx-7 (1979) will not run well in the winter without proper carb tuning, and the same goes for summer.