As the engine settled into a smooth, rhythmic thrum, Elias saved the new configuration. This wasn't "lick and stick" tuning; it was hours of study and precision. Calterm 4 had allowed him to bypass the factory roadblocks that stop regular mechanics, giving the fleet owner their truck back without the fear of it dying on a mountain pass.
Technicians often use both; they might save an ECM image in Insite while creating a custom XCAL file in Calterm for complete backup and specialized tuning. How Calterm 4 Works cummins calterm 4