Hmm that weird. You should have noticed a change in temps.

 

Yes it comes on at like 3psi and full at 9..it did get richer and tuned it for 11.3 11.5 afr.just seemed like it was fluttering even tried a 2 @ a 5 nozzle.went up with timing nothing.there spraying thats for sure..

 

I didn't notice near the difference with meth when I was running the KB supercharger as I do with the turbo. I think the alum in the blower soaks up most of the cooling affect of the evaporation taking away from cooling the inlet air. I was spraying a 6gal/hr pre blower and 10gal/hr post blower in didn't see much drop in temp from that hot air blower but never had a knock problem with it. Like your setup, the temp sensor is in the tub, but with all that hot aluminum, it's hard to cool air chemically.

On my turbo on the other hand, I'm pretty much at or below ambient when spraying. Works much better on turbo setups then PD blowers I think.

 

This^.