Dinan High Performance Intercooler - 2007-2010 BMW 3-SeriesGreater power gains are achieved with a larger high performance intercooler. The Dinan intercooler provides a 93% increase in total volume, substantially reducing the pressure drop by 0. 7 psi, as well as providing more efficient heat exchange. "Cool down" time is also reduced enabling the cars to produce full power under varying driving conditions such as stop and go traffic. The system has been engineered as a direct replacement for the stock unit,