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Reprogramming
Today I was called to program a replacement ECU. After
getting into the process, I finally asked if it was used. It
was - Hyundai didn't allow reprogramming of an ECU until
2004, from what I understand. 
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| Engine | 2.7 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Hyundai Sonata GLS 2.7L
| Engine | 2.7 L |
| Trans | 4-speed Automatic (Electronic) |
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