why don't you log or just take a look at your Intake Air Temperatures when that starts to happen... IAT should be around 100 F while the car is moving no matter how hard your driving with 10 - 15 F fluctuations.. if its much higher than that, you know that supercharger cooling is not working correctly!! but note, while standing still with the car idling, the temp goes way up... its normal.. once you start moving, it goes down very quickly...
also check for Knock Retard and timing advance.. I had that happen a few times, after checking the suspicion was bad fuel.. once I gassed up at the track for last session with what they said was 91, and the car was off more than 10mph on the straight after a few laps. the whole session went to waist... I believe that when the knock sensor is unhappy (bad fuel, heat) it knocks you down to a low octane map and there goes your power.. maybe some tuners can chime in on this
You can use what I use... the Trorque app on your phone.. awesome app lets you see tons of data coming from your ecu, add gauges you can monitor on your phone, datalog, pull and erace codes. etc.. its no complicated at all
all you need is the app and a bluetooth obd device
here is a link
https://www.amazon.com/Panlong-Bluet...s%2C322&sr=8-8
also, you can use your PDR recorded sessions to pull IAT data using a program called PI Toolbox.. so if you have that session recorded, you can find out if your intake air was too hot.. unlike torque, the PI Toolbox program is rather complicated.. there are vides available to help
interested to see what it is