A few users have reported overheating issues in some conditions with lights + FMIC, which does make some sense. I think one guy was towing, so that would be a perfect storm of bad conditions. The lights, depending on what and how many, will obstruct some airflow over the radiator, but by itself probably not enough to cause overheating. Now, add in a FMIC and you have somewhat obstructed airflow to the IC which does what? Cools the hotter than ambient intake charge, so the already slightly obstructed air in front of the IC exits at hotter than ambient at less volume and velocity than expected, enters the radiator. Now, add a much higher load, like towing, where you’re going much slower, much less air flow to start with and the engine is loaded much higher.
The thing is that even with users commenting on their success or failure using the FMIC, you don’t really know their use case that well and you won’t know how relatable it is to your use case. You might get comments from starbucks parking lot heroes to full send sand blitzers and everywhere in between. So just consider the use case well.
