Custom Tuning for Most Vehicle Manufacturers.
For Ford, GM, Dodge, Jeep, & Chrysler Vehicles.
Nearly every make and model.
Most Major Software Manufacturers Supported Here!
SCT & Bully Dog
HP Tuners & More
We Are The Undisputed Leaders in
F150 Ecoboost 2.7 & 3.5 Performance
No Compromising Performance &..
Unmatched Industry Best Power, MPG's, and Drivability.
Our NO LAG Turbo Tuning Delivers
No matter the application .....We Have You Covered
Go With The Experienced People
Cars, Trucks, & SUV's
All GM Tuning Supported Here
has just been Redefined!
With our No LAG Turbo Tuning
Know That WE HAVE YOU COVERED!
Towing Your Boat
Second To None Ford Ecoboost Tuning
To The Work Site, or The Race Track
We Make your Explorer or Explorer Sport...
RUN like a Performance Sedan
With Smooth Linear on Demand Power
....No Matter where You Go!
Don't Trust Just Anyone With Your Investment
When it comes to Dodge & Chrysler Tuning
Whether its your Dodge Ram, Challenger, R/T, SRT, Scat Pack, Drag Pack or HELLCAT
SSi Performance Delivers Everytime
Go with Proven Experience
Formerly Known As Southern Speed Inc. Ford, GM, & Chrysler Custom Tuning. #1 in ECOBOOST TUNING. Your Best Choice for all your CUSTOM TUNING needs.
Our annual July 4th SSi Performance Sale Starts now! You can get the best tuning available and get up to 15% off on programmers with custom tunes and Custom Tuning only purchases. At checkout use coupon code – 1776 Not only will you get world class performance tuning, you will also get those much needed extra mpgs. These all come with our newly released OG3 Performance tuning.…