Lexus IS350 3.5 89663-53621 Stock

Lexus IS350 3.5 89663-53621 Stock

Type: Stock / Original engine ECU dump

What it is:
Factory (stock) engine calibration for professional read/write in tuning software. No Stage power changes and no emissions deletes unless listed above.

Changes / content:
• Stock maps only — restore or base file.

Notes:
• For professional use. Confirm ECU ID, software version and vehicle match before flashing.
• Incorrect write can damage the ECU — follow your tool’s procedure.

Legend:
• Stock / Original — factory ECU calibration dump (no performance or emissions changes).