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Veterans Day

Our Annual Veterans Day Sale starts now!

Our Annual Veterans Day Sale starts now! You can get 15% off programmers with custom tune packages and custom tuning only. At checkout use coupon code- Vet We want to thank every single veteran out there for all that you have done and do for us.  



DiabloSport GM

DiabloSport Releases New remote unlock and custom tuning available for GM 2019 – 2022 Trucks! 5.3 & 6.2 Engines.

Now we are delivering SSi Performance Custom Tuning for the 2019 to 2022s! DiabloSport Releases New remote unlock and custom tuning available for GM 2019 - 2022 Trucks with 5.3 & 6.2 Engines. This is an industry game changer. No need to send in or swap our any ecm or tcm components. Its all done remotely. No more additional $$$ spent in credits for the ECM tuning and TCM tuning to buy and no...


Zack 1/4 mile

Zachery Qualls runs a World Fastest 1/4 mile in his 2021 Jeep 6.4 with a [email protected]!

Congratulations to¬†Zachery Qualls for running a World Fastest 1/4 mile time in his 2021 Jeep 6.4. His best time was a [email protected] MPH which makes his jeep the fastest to date. This was done on a 93 Octane Performance custom tuning with SSi Performance using DiabloSport CMR custom tuning software. Now its time to make him a race tune. Stay Tuned!   Click on the video to watch with youtub...


Ford 2021 to 2023 F150 Powerboost Custom Tuning Supported now!

2021 to 2023 F150 Powerboost Ecoboost is supported with custom tuning now! Limited supplies so get your devices with custom tuning in the link below. This device also comes with 3 custom tunes of your choice included. Click here to purchase or in the link below https://southernspeedinc.com/product/2021-and-up-sct-x4-for-ford-with-3-custom-tunes/



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