IE's fuel-optimized 87 AKI octane map uses advanced tuning strategies to extract additional power over stock while accounting for the less expensive pump gas rating for economy driving. This map is perfect when taking your Atlas on a long road trip, cruising, or anytime you may want to leverage fuel cost over performance. Aside from the reduced fuel cost at the pump, you may see MPG increase with our optimized 87 calibration, depending on your driving style.
87, 91, and 93 octane maps are included with purchase and can be switched using your IE POWERlink.