Definition
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Definition files allow raw binary data to be represented logically. They are the critical link between programmers and tuners - neither is much use without the other.
"Because there's money in selling these codes (sometimes upwards of $50,000), the industry has little incentive to embrace the community (p. 65. Smith) Malicious actors have damped public and community progress for decades and "...wont be motivated to share their findings" (p.64, Smith)
Two Main forms:
*.kp - WinOLS
- - Rare in public.
- - Purchased or leaked files
- - Linked to expensive software
*.xdf - TunerView
- - Common in public
- - Can be created from *.kp files via scripts
- - Freeware and community driven
Other
*.ols - WinOLS project
- - contains definitions, original bin, and project bin packaged together
- - *.bin data can be extracted via hex editor
Damos (A2L) - is a file that includes descriptions of "all" maps
- - Ideally a leak from mfg service department, or OE tuner.
- - Rarely does it contain every map or byte/bit value.
Source(s): The Car Hacker's Handbook - A Guide for the Penetration Tester (Craig Smith)