Wagner Tuning Competition Intercooler Audi A4 A5 B8 1.8 TFSI 2.0 TFSI | AustraliaWagner Tuning Audi A4 Intercooler Kit (Audi A4 A5 B8 TSI) This Wagner Tuning Competition Audi A4 intercooler has the following core size (610mm x 440mm x 65mm= 17. 45L providing 178% more frontal area and 158% more volume compared to the stock mounted intercooler. Our engineers have increased the intercooler core size and efficiency, as well as improving the end tank design to remove any OEM bottlenecks, resulting in increased flow rating and charge