The OpenECU M250 and OpenECU M220 vehicle electronic control units (ECUs) from Pi Shurlok are designed for applications requiring compact enclosures with low to medium input/output connections. They are additions to the growing OpenECU product family for low to medium production quantities yet have the versatility and support for prototype use in a wide range of applications. The M250 and M220 incorporate high-performance Freescale 32-bit microprocessors to meet the increasing processing power demands of the latest model-based control strategies for applications such as diesel exhaust aftertreatment. In addition to emissions control, target applications include chassis control and common-rail diesel engine management. Both units are engineered to rigorous automotive and defense industry standards and are supplied in chassis-mount, sealed metal enclosures with IP67 environmental protection. The M220 is a low-cost, ultracompact unit. The M250 has a higher I/O count and the capability of being customized with an internal daughter card.