if you have issues with heat, then what you make on the dyno may not be indicative of what it actually does out on the road with decent airflow.
Hoping for even 270hp without a FMIC and a decent exhaust system is ambitious. I wouldn't be at all surprised if that 236hp was fairly accurate if it was getting that hot, with no FMIC or exhaustetc. May even have made more power with a lower boost level, as less boost means less heat.
Even then i still seriously doubt your IAT was in the 70's, but again was this verified with the cars IAT sensor? What does the IAT read out on the road? Did the dynocell have adequate fans/airflow?
If there was no timing pull then either the car wasn't that hot, or IAT protection kicked in meaning the timing request is lowered and in turn you won't make good power, but wont show as CF through VCDS.
What brand of intake? MAF reading alone is fairly useless as all aftermarket intakes read differently, some over read, some under read etc.