Custom Tuning for 2018-2023 Mustang Ecoboost. Custom tunes available as a full package on our HP Tuners RTD, (The full package includes 91 or 93 Oct Street/Track tune, Fuel Milage Pop/Flame and all of these tunes on E85 or Race Fuel), or as Multitune on the PCMTec platform with the OBDX Device (**TO GET MULTITUNE SWITCH ON THE FLY FROM THE CRUISE CONTROL ON THE STEERING WHEEL YOU MUST SELECT MULTITUNE IN THE DROP DOWN**).  Custom tunes in both packages include:  91-93 Oct street/track, E85, fuel milage, and pop/flame. This package includes credits required from HP Tuners and PCMTec depending on the option selected.