tyro

We had some 10 degree weather lately and I could definitely feel the "boost" it provided the supercharger.
Does anyone have any idea how much additional HP, if any, can be realized by cold weather?

Buellwinkle

Use the calculator below to figure out the relative HP difference at different temps, humidity, altitude, etc. Just as a reference, 29.92 inches of mercury (HG) is considered normal, altitude is where you are at but sea level is 0 and humidity is relative to where you live (here it's usually half of what it is on your coast). This doesn't take into consideration improvements in intercooler cooling so your improvements will certainly be better than this calculator shows. Also, although it shows higher humdity as lowering HP, it can actually increase it if you have detonation problems, specially if you did a chip or pulley kit.

http://www.csgnetwork.com/relhumhpcalc.html