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Comment by bflesch | original | Claude Code and Codex reverse engineered my 1994 Jeep's ECU over a $3 Arduino [video]
[−]bflesch · 2026-11-15 Sun 16:57 UTC · link
You can adjust the mixing ratio of fuel and air in a way so that the exhaust has reduced emissions. This will reduce performance of the car but allows the exhaust to pass the emission tests.