edit: it wasnt hot out though, it was in the 60s ill do a weekend daytime track day when i get home, im sure it will be in the 80s even this time of year in south florida :)
I'll try my take on this after reading it. An IC's main goal would be to keep air temps cool enough that the DME does not pull timing. The minimal gains from temperature changes would depend on the level and type of tune you are running. This is why it's a supporting mod because your should not be running a tune that your IC cannot support. Does squirting water(leaving Meth out of it) into your intake add power, not really but it cools it to where you can reliably run more timing without overheating the charge and having the DME pull timing back again. Given that this is a cooling mod similar to any other heat exchange on the car radiator, oil cooler or trans cooler that is a common mod on plenty of other cars in history you wouldn't expect to hear a radiator added power would you? But if the ECU/ECM of that other car pulled timing when the coolant temp got over a certain degree after a run down the track it would be considered a supporting mod that would allow your engine and DME configuration to run to it's full potential.
Are you aware that our ECU pulls significant timing as the air charge heats up even if there's no knock? That's a big part of why meth is so effective for us.
I don't know what a JB4 can show you, but it's clear on a Cobb. It starts pulling time at air charge temps between 43-45C (~110F). Unless the JB4 actually sends a false temperature signal and then compensates the fuel some other way (which I doubt), this affects you the same as everyone else. And you can't just add more timing because it will knock, which is the reason they pull timing in the first place. With E85 mixes that situation improves and you can add some timing back in without knock, but the system might not be smart enough to do that just enough to compensate for what the ECU is pulling.
So anyway, the reason an IC (or meth) makes more power than you'd think is because we get the improved charge density AND the better timing. I'm not a fan of meth but I can see why some people are, since you can always get your air charge below 110F using meth, where you can't always achieve that with just an IC in hot weather.
I agree that in cases where you are octane limited it can add timing. That is only another benefit to added power. For me personally it has done nothing for timing since I have been running E85 long since I got an FMIC. Adding timing or lowering temperature both result in more power. I don't see how it can be argued not to be a power adder.
Maybe it is anti power sub tractor???? (if you do the math....)
Don't forget the (admittedly small) flow characteristic benefits of a better IC. Less pressure drop/etc.