Lethal Performance is proud to offer Jon Lund custom tuned SCT Livewires for your 2011 5.0L Mustang GT. You can expect 8-12rwhp with our 93 octane tune and 15-20rwhp with our Race Gas Tune. These tunes are made from countless hours on the dyno and on track with multiple 2011 Mustang GT's. When you order your tune it comes pre-programmed by us specific to the modifications you have on your car. All you need to do is plug it in and flash the vehicle and you're on your way. What's best about our custom tuned SCT devices is that you're also able to make several changes to the tune if needed. So if you happen to change your gear ratio or would like to raise your rev limiter there's no need to request a new tune. It can all be done with the SCT device. If you have any questions about our custom tuned programmers please feel free to give us a call.