The 034Motorsport Supercharger Heat Exchanger Upgrade Kit for the Audi B8/B8.5 is an excellent stock-location intercooler for the 2010-2017 Audi S4. Testing has proven that this heat exchanger upgrade is capable of significantly reducing intake air temperatures. The increased thermal capacity of this supercharger heat exchanger kit makes this a strongly recommended upgrade for Stage 1 and Stage 2 tunes, and a required upgrade for higher levels of power.