Wagner Tuning EVO2 Competition Intercooler Kit | BMW Z4 E89 (200001064)2009 2016 BMW Z4 Intercooler Kit by Wagner Tuning This Competition Intercooler has the following core size (520mm x 210mm x 150mm stepped = 13,572 cm ), providing a 85% larger frontal area and 90% more volume compared to the original intercooler. Our engineers have increased the intercooler core size and efficiency, as well as improved the end tank design to remove any OEM bottlenecks, resulting in increased flow rating and charge cooling properties.