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SCT and Bully Dog 2010 to 2021 Dodge Cummins Diesel Custom Tuning.

We have added SCT and Bully Dog 2010 to 2021 Dodge Cummins Custom Tuning to the site. These tunes are getting great exceptional feedback with our customers. We have just custom tuning and programmers with custom tuning packages.   https://southernspeedinc.com/product-category/chrysler-dodge/dodge-ram-cummins/click here Any questions about product coverage feel free to email socaldiablo@g...

SCT and Bully Dog

SCT and BullyDog Ford Diesel Custom Tuning updated on the site.

Our SCT and BullyDog Ford Diesel Custom Tuning has updated on the site. We updated this and created a more comprehensive section for our Ford Diesel Customers since we have been getting great feedback on our tuning. We are always striving to make things better and easier for our customers.   https://southernspeedinc.com/product-category/ford/ford-diesel-tuning/ click here   You shoul...

July 4th

July 4th Sale starts today!

Our annual July 4th sale starts today.. Get 10% off Tuners with Custom Tune Packages and Custom tuning packages of 1,2,and 3 custom tunes. At checkout use coupon code- July4 We wish everyone a Happy and Safe July 4th weekend! Happy Birthday America!

Memorial Day Sale

SSi Performance Memorial Day Sale starts now.

In observance with this special holiday weekend and appreciation for all that made the ultimate sacrifice our annual Memorial Day Sale starts today. Get 15% off Custom Tunes and selected Programmers with Custom Tuning. SCT X4, BDX, and LiveWire are all included. At checkout use coupon code-  Memorial Day We would also like to add that we appreciate all of our service men and women who are curr...

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