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What temps are you reading on the intake during the 0-60mph run? whats the lowest it reaches and what does it start at. Are you getting it down to 40c?
IAT isn't calibrated yet so temps could be out however like for like it seems to be running around 15 - 20 deg warmer than stigs V6. Way way way higher than 40 deg but as I said - not calibrated. It is fluctuating around 5 deg. (It may even be measured in f - haven't looked)
Reaper
The charts I've seen always run at 105c at idle and about 60c once it's up and screaming and inbetween that during acceleration. If it's really that hot or there is just lag on the sensor who knows but as you say stigs is 20 cooler then that's alot of power gone missing
Reaper Has My Motor And Diff!