The DINANTRONICS Elite is a highly engineered piece of computer hardware and software that enhances engine performance to levels the stock programming is not allowed to venture into. It does this without negatively affecting long term reliability or the functionality of on-board diagnostic systems. The Dinan Difference is possible by employing a full staff of talented engineers that are well rounded in many facets of automotive engineering and backed by a wealth of hands-on knowledge. Stemming from diverse backgrounds not only on racing teams but on standard factory production line vehicles we have seen it all. Manipulating these signals with an adept hand all the while keeping an engine running at its best and with the most reliable power is what Dinan is all about. NOTE: The DINANTRONICS Elite for the MB 4.0L engine has been discontinued but limited stock is still available at the listed reduced price. Units are sold AS IS and carry a 30 day, defect only warranty.