I believe it's all in the fitment of the rad and intercooler.

There is a benefit to charge temps to putting the fans between the two as there's more intercooler surface exposed for cooling.

As for coolant temps, as long as the intercooler and rad are butted up nice, tight and square you will be fine. Air will take the path of least resistance, so if you have a gap, less air will flow through the rad, more around the rad.

If you put the fans on the rad, it still has to draw warm air through the itercooler anyway to cool the rad.

I have my fans fitted to my Airtec intercooler which is tight against the Airtec rad. I rarely get above N on the temp gauge when stood still in traffic. Operating temps generally around the R.

Not disagreeing with mannion just offering a diferent opinion.

Lee