DME Models: BMW 404 vs. 484 BMW 404 DME (Bosch 0261200404): Compatibility: The BMW 404 DME is designed for vehicles equipped with M60 engines manufactured up to December 1994. Description: The Bosch 0261200404 DME, commonly referred to as the BMW 404 DME, is tailored for BMW M60 engines in vehicles produced prior to December 1994. Installation: Customers do not need to send in the 404 DME for chip production and installation. Instead, DUDMD Tuning provides a new chip that customers can easily install themselves in approximately 15-20 minutes. Application: This DME model supports older BMW models such as the E34 540i6, E34 540iA, E38 740i, E38 740iL, E32 740i, and E32 740il produced before December 1994. BMW 484 DME (Bosch 0261200484): Compatibility: The BMW 484 DME is intended for vehicles equipped with M60 engines manufactured from January 1995 onwards. Description: The Bosch 0261200484 DME, known as the BMW 484 DME, is specifically designed for BMW M60 engines in vehicles produced after December 1994. Installation: For the 484 DME, customers are required to send in their DME to DUDMD Tuning for new chip production and installation. This ensures precise customization and optimization of the performance chip. Application: This DME model supports newer BMW models such as the E34 530i, E32 730i, E32 730il, and E31 840i produced from January 1995 onwards. Key Differences: The primary difference between the BMW 404 and 484 DMEs lies in their compatibility with vehicles manufactured before and after December 1994, respectively. While the 404 DME allows customers to install the new chip themselves without sending in the DME, the 484 DME requires customers to send in their DME for chip production and installation by DUDMD Tuning. Both DME models, the 404 and 484, are tailored to optimize engine performance for their respective vehicle production periods, ensuring compatibility and efficiency. Customers should consider their vehicle's production date and the corresponding DME model when seeking performance chip installation services from DUDMD Tuning to ensure the correct procedure is followed for chip production and installation.