The specified term refers to a particular engine control unit (ECU) calibration file intended for use with Dynojet tuning devices. It is a digital file designed to modify the operational parameters of a vehicle’s engine management system, potentially altering factors such as fuel delivery, ignition timing, and rev limits. For example, a user might employ this file to optimize engine performance after installing aftermarket exhaust components.
Utilizing such a file offers the potential for enhanced horsepower, improved throttle response, and a generally more refined driving experience. Historically, these files were created and shared within enthusiast communities or offered commercially by tuning specialists. The availability of these downloadable files has democratized engine tuning, allowing individuals with the appropriate software and hardware to fine-tune their vehicle’s performance.