The Electromotive TECm is a replacement motherboard for the Motronic ECU that controls many mid ’90s BMWs. The TECm is not an aftermarket ECU with an adapter. It is a custom-built motherboard designed specifically as a direct replacement for your Bosch Motronic motherboard with built-in support for BMW-specific features such as VANOS and A/C control. Electromotive TECm can even be installed so that it leaves no outward sign of its presence. All interfaces to your car are supported. Plug in an Electromotive TECm and the factory tach, CEL and fuel consumption gauge all work and the reliable factory engine harness stays intact. You get the advantages of a modern race ECU without the lost time and expense engineering and building a custom harness or changing sensors.
The Electromotive TECm replaces Motronic ‘413’ and ‘506’ ECUs, including EWS units. They are common on BMW M50 (E36 325, E34 525) or S50 (E36 M3) engines and are often used in the popular ODB2 (M52, S52) to ODB1 intake and harness performance upgrade.
Who can use a Electromotive TECm? If you race in a series where you must manage different tunes for classification purposes (e.g., NASA GTS) the Electromotive TECm is your ticket. Maybe you plan to build or already have a forced induction engine and need to take control of it. Or maybe you are one of those performance-minded people who makes incremental changes and wants a platform that will grow with you. The Electromotive TECm is an easy-to-implement solution for these projects and more.
For a product matrix comparing our current TEC line or management systems, please click here.