Posted:
February 24, 2020
One of the main reasons the M3 is on another level is the S55’s ability to keep its cool, especially when it comes to the intercooling system. BMW equipped the F8X generation of the M3 and M4 with a state-of-the-art air-to-water intercooling system for a more efficient means of keeping the charged air cool, but before we dive into our plans for besting the F80’s heat exchanger, let’s take a look at what an air-to-water system even is.
The Cool Factor

The process of air-to-liquid intercooling has been around for some time now, but it wasn’t until recently that we