QUESTION

Can I run 91 on a 93 tune?

ANSWER

We do not recommend running a lower-octane fuel than your tune is written for.

However, occasional use of 91 octane on a 93-octane tune is generally acceptable.

Performance and consistency may be reduced compared to using the intended fuel grade. If 91 octane is the highest-quality fuel regularly available in your area, a dedicated 91-octane is recommended.

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TIPS

The safest option for running fuel of a lower grade than your tune is written is to restore the factory calibration.

If needed, you can purchase a separate Additional Tune for a more suitable fuel type, such as Auto-Octane or 91+ Octane.