what octane???

[drdingo21]

Originally posted by AzCivic
its only going to advance it to where the factory set it at in the first place which was based on a certain octane, the octane they recommend you run.

It will have two timing settings. 1 when you run the lower octane, and 1 where you run higher octane. The higher octane setting will deliver more horsepower to the wheels. And the lower octane setting will deliver the engine rated power.

*edit* and its not advancing, if its set to factory setting.