MAD BMW High Density Stepped Core F Chassis Race Intercooler N20 N26 N55 1/2/3/4/M2Upgrade from your stock intercooler to the MAD Race intercooler for maximum performance and reliability! The stock BMW intercooler is small, inefficient, and cannot keep up with the high boost that your tuned car targets. MAD BMW race intercooler will keep the intake air temperature in check, allowing your BMW to perform at its best at all times. The MAD F chassis BMW intercooler uses a high fin density core for maximum cooling. It also features a