funny you should ask as i just came back from north carolina and the humidity is way lower there than here in florida. it seems the lower the humidity the chillier the temps get. i noticed at least 5+ degrees cooler than i do when im here so id say less humidity this things works even better. my coolant lines coming out of the intercooler are actually cool to the touch as is the aluminum on the intercooler and thats just in daily mode not competitive mode. come winter i may see icecubes tumbling out behind me
i really need an a-pillar gauge set-up though, with a lighted gauge.