How I Fixed My 1994 Jeep Cherokee Smog Test Failure Using AI (Claude & Codex) 🚗🤖🔥

An incredible engineering story: using a $3 chip, Claude and Codex to diagnose, hack, and rewrite the computer of a 1994 Jeep Cherokee XJ to finally pass the strict California smog test! From figuring out why the ECU leans out fuel at 25 mph to rewriting unprogrammable ECU memory.