Rev Limiter Adjustment
Professional ECU file service — delivered within hours
The factory rev limiter is set conservatively to account for engine wear and to provide a safety margin. For motorsport applications where engines are regularly serviced, or for specific use cases requiring a lower limiter (valet mode, young driver protection), rev limiter adjustment provides precise RPM limit control.
What's Included
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✓Raises or lowers the hard and soft rev limiter RPM values
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✓Adjustable in fine increments — typically 100–250 RPM steps
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✓Separate settings for fuel cut limiter and ignition cut limiter
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✓Can include a secondary "valet" limiter activated by a switch or DTC
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✓Supported on all Bosch, Siemens, Continental, Delphi, and Marelli ECUs
⚠ Raising the rev limiter beyond factory specification should only be done on properly maintained engines with confirmed valve train clearances.
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