transmission tune

  1. Trans not working but not blown... Weird codes and wont shft into gear. XHP + Custom E50 Tune

    I recently took my 2020 Supra to a shop and had them tune my trans with XHP. Since then, I’ve gotten multiple codes: 420411 Gear ratio monitoring in fixed gear, clutch B, disrupted 421362 Gear ratio monitoring: all clutches implausible CDC10D Signal (status of transmission gear selection...


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