Our calibrations attempt to utilize as many of the OEM strategies as possible to offer the most advanced, powerful, and safest driving experience to you. Most of our calibrations utilize the OAR just as the factory does. However, our calibrations are designed for a specific octane rating and have a no nonsense policy for knock. If the ECU senses knock, we will aggressively adjust the OAR towards positive. We have designed the OAR to be utilized so that maximum performance is achieved for the specified octane. This is why it is important to run the appropriate calibration for your available fuel type!
The OAR is also a KAM (keep alive memory) stored value and will be reset upon initial installation of the Accessport. It will take time to learn, so don't be alarmed after a few days of driving if it's not fully settled. Once learned the value will persist through each start-up (even through "change map"). The value may change from time to time based on knock sensor feedback, which is completely normal and expected. If you find the OAR value does not stay near -1.0 when using top tier fuels, please use the Accessport to change to a lower octane calibration until better fuel can be found.