Wagner Tuning EVO 2 Competition IntercoolerCompetition Intercooler Kit EVO 2 for VW T5. 1 2,5TDI The competition intercooler has the following core size (670mm x 302mm x 75mm = 15. 175cm), providing a 40% larger frontal cooling surface and 229% more volume compared to the stock mounted 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