Online decoders lack the necessary if/then as well as either/or logic to prevent errors. They are in = out decoders i.e. pre programmed to respond to an input whether that output is logical or not (see below for engine and transmission as well as SPD)
Make and model specific decoders such as the Charger decoders can be useful IF the make and model are only produced at one plant. Yet, if they are valid for only one make or model, they only serve only a narrow purpose. The Charger decoder may or may not be valid for A, C or other B bodies therefore limited in application. Meaning, it may not be useful to an owner of a Satellite produced at Lynch Road.
Online decoders struggle with the differences in coding between various plants.
Car line DODGE Charger Price class Premium Body type 2 door sports hardtop Production date February 31, 1967 Shipping order 12345 Engine 426 2x4bbl 8cyl 425hp hemi head RB [377/383] Transmission Transmission-3speed manual column shift [391]