Livernois Motorsports' 93 Octane Performance Tuning is now available for the 2018 Dodge Durango SRT and provides exceptional gains throughout the entire RPM range, as well as removing the common power drop off in the mid-range often seen on 6.4L Hemi equipped vehicles. This dramatic improvement in power increases the performance of your Durango. Also available is our revised Transmission calibration which ensures improved shift firmness, and shift points better matching the new found power and torque!