No, I'm not implying it is the SC that is causing the heat issue. I think it is the water pump (it's squeaking again) and possibly air in the system. I've filled and burped it a few times especially when changing the radiator. The factory radiator along with the ac condensor and trans cooler were clean when I upgraded to the mishimoto. It just gets really hot climbing hills. And by really hot I mean it will trigger the temp light.Are you necessarily implying that the heat issue is from the SC? May I suggest that the system could also be plugged internally or externally? My radiator was caked with mud on the condenser side (hidden). I cleaned off the radiator while it was out the other day and the amount of mud that I flushed out of the fins was simply amazing. most of it washed down the drain in the yard but there is still a bunch of mud caked everywhere where I washed it off. There was a layer of mud on the bottom of the radiator overflow as well. not sure how it all worked up there but it did.
The other potential heat issue that I would float out there is a possible mix of OAT with HOAT coolant where it is causing coagulation and build up inside the system.
As for coolant, it came with OAT from the factory and was refilled with OAT when the dealer changed the water pump at 4k (I checked) and I refilled with OAT when I changed out the radiator.
I'll change out the water pump next week and vacuum fill the cooling system and hopefully that combo will fix my issue and because Jeep states to vacuum fill the system I am leaving that as a possibility for the heat issue. I do not think it is because of the Las Vegas heat because prior to the SC in triple digit temps, the temp gauge never went past the halfway mark even when climbing hills. And I've actually been in Carson City for the past few months and the outside temps are 20-30 degrees cooler and it still gets really hot on hill climbs.