the whole purpose of a fatter FMIC is consistency and fighting heat soak
keeping intake temps down
If you run a stage II tune without the FMIC you could potentially run into problems as a result of that heat
I would not suggest running a tune designed for cars with an upgraded FMIC on a car without one
Unless you're willing to risk damaging the motor
Sorry, I am bringing this back to life.
By "intake temps" do you specifically mean the temp of the charge air temperature? I mean if your charge temp is the same and you aren't running for extended periods of time, the rest of the intake components (intercooler and pipe/tubes) shouldn't be experiencing excessive stress?
And, if there was heat soaking issues, you should see a rise in the temperature of all related component areas right (engine bay, charge, coolant, oil, exhaust temps)?
Thanks for any info.