The Cummins BHJQ CM2450 engine control module (ECM) presents unique challenges for tuners seeking to access and modify stock files. This article explores the difficulties in reading the CM2450 ECM and discusses potential solutions for obtaining base files for tuning. We will delve into experiences using various tools and software, including EFILive, CalTerm, and KTAG, highlighting the complexities and limitations encountered when working with this specific ECM.
Decoding the Cummins BHJQ CM2450 ECM
Accessing the stock file of a Cummins BHJQ CM2450 is proving difficult for many tuners. Traditional methods, such as using a bypass cable with EFILive, are not yielding successful results. The scarcity of readily available base files for newer trucks further complicates the tuning process.
Several forum users have reported unsuccessful attempts to read the CM2450 using common tuning software. CalTerm, even when utilizing the J1939 port, appears unable to extract a complete and usable file. Similarly, attempts to convert files obtained from other sources, such as KTAG (a European tuning product), have resulted in incomplete or unusable data in EFILive. These files often lack critical sections of the flash memory, rendering them ineffective for tuning purposes.
Uncommon Calibration ID and OS Number
One specific case highlighted a CM2450 with an unusual Calibration ID (M2370131MB) and OS number (52219301). The presence of the letter “M” prefixing the Calibration ID is atypical and suggests a unique configuration for this particular ECM. Experienced tuners noted that the closest supported configuration in EFILive is 52.21.03.01 with Calibration ID 52370131AG. The subtle difference in the OS number (52.21.93.01 vs. 52.21.03.01) and the unique “M” prefix in the Calibration ID indicate that this specific CM2450 variant is not yet supported by EFILive.
Further investigation using the vehicle’s VIN (3C6UR5SL2MG674929) and the PCM tag information (CM: Cm2450B P/N 4384696 S/N 5115070 ESN 59547381 E/C IA80062.01) confirmed the unsupported status. While these details provide a comprehensive identification of the ECM (OS: 52.21.93.01, Cummins Cal: IA80062.01, Dodge Cal: M2370131MB), they unfortunately do not offer a solution for obtaining a compatible base file.
Potential Solutions and Future Prospects
While current software solutions like EFILive and CalTerm appear inadequate for reading the Cummins BHJQ CM2450, alternative approaches may exist. One user suggested using the Dimsport My Genius tool for bench reading the ECM, claiming it can perform a complete read. This method, however, requires removing the ECM from the vehicle.
Another potential avenue is to contact EFILive directly through their service desk for assistance with unsupported ECMs. They may have access to updated definitions or alternative methods for obtaining the necessary base files.
As vehicle technology continues to evolve, staying informed about the latest software updates and tuning techniques is crucial for successfully working with challenging ECMs like the Cummins BHJQ CM2450. The ongoing development of tuning tools and the collaborative efforts within the tuning community may eventually yield solutions for accessing and modifying these complex systems.
