[masterp2]

its been 3 years!

I thought I would add something that might revive this thread. It is specifically relating to observance of increasing CAC out temps with WI, and then subsequent lowering of charge temp at the the throttle location. It occured to me, in most cases with no WI, that these temps will be almost identical at all times. Only transport occurs from the CAC outlet to the throttle, no air "treatment". There is probably a modest pressure reduction.

It has been widely stated "CAC efficiency drops with WI". I agree, but I don't think it expalins what is observed, ever increasing CAC out temps with increasing water flow rate. I believe what you are seeing is the endothermic affect of vapor condensing in the CAC. This would have the opposite effect of evaporation, a heat up effect.

So why is throttle plate temp dropping past the CAC out? Pressure drop. Lower pressure is experienced the further downstream. And there is re-evaporation dropping the temp.

whatchya think?