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Providing You With The Best in Automotive Tuning Performance

We Custom Tune with SCT, Bully Dog, DiabloSport, HP Tuners, & More!

Our Custom Tuning is Superior with SCT, Bully Dog, DiabloSport, HP Tuners.

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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

Diablo Sport

HP Tuners & More

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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

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No matter the application .....We Have You Covered

Go With The Experienced People

Cars, Trucks, & SUV's

All GM Tuning Supported Here

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Unequaled Ecoboost Performance in

has just been Redefined!

Drivability, Power, & Fuel Economy

Your Ford SHO, MKS, Flex, Explorer, & Edge Driving Excitement...

With our No LAG Turbo Tuning

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Ford GM and Dodge Truck Performance


Towing Your Boat

Second To None Ford Ecoboost Tuning

To The Work Site, or The Race Track

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We Make your Explorer or Explorer Sport...

RUN like a Performance Sedan

With Smooth Linear on Demand Power

....No Matter where You Go!

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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

Welcome to SSi, The Automotive Tuning Experts (562) 305 3532

For All Your Ford, GM, Chrysler, Dodge, and Jeep Custom Tuning Solutions

Formerly Known As Southern Speed Inc. Ford, GM, & Chrysler Custom Tuning. #1 in ECOBOOST TUNING. Your Best Choice for all your CUSTOM TUNING needs.



Programmers with Tunes   Custom Tuning


  • gm tuning

    Ford, GM, & Dodge Custom Tuning Professionals

    Custom Tuning for Challenger, Mustang, Camaro, and more.

    Read More

  • ecoboost tuning

    Ecoboost Custom Tuning

    F150, Explorer Sport, SHO, Mustang, & Fusion. No Lag Turbo Power Done Right!

    Read More

  • Ford Tuning

    Ford, GM, & Dodge – TRUCKS & SUVs

    Custom tuning for F150, Ram, Silverado, Jeep and more.

    Read More

Why choose us?

 First of all, you came here for a reason. You are seeking performance tuning for your car or truck and you came to the right place. We have more experience and have you covered with any Ford, GM, Dodge, Jeep, or Chrysler Tuning needs. Don’t trust just anyone with your vehicle. 


How much experience do we have?

 Put our 0ver 20 plus years of experience in performance tuning to work for you. There is a reason we are the leaders in performance tuning. The customer testimonials, reliability, mpgs, and track times for racers speak for themselves. No compromise performance tuning with our priority on health, safety, and longevity of every vehicle we tune.


What do we support?

 We support all of the major tuning manufacturers with their custom tuning software. We are proficient with SCT, Bully Dog, Diablo Sport, HP Tuners, and stand alone race systems. If you already have a device or programmer you can purchase custom tuning from us that will be head and shoulders above any competitor. If you need a programmer with custom tuning let us help and guide you. We can put yourself and your vehicle in the best position for success. Feel free to give us a call for any and all consultation you may need.


Let us Show you!

 SSi Performance offers superierior Ford, GM, Dodge, Jeep, and Chrysler Custom Tuning. Buy one of our custom tuning options and see the power, drivabilty, and mpgs you have been missing out on. Let our many years of experience better serve you.

Check Out Our Customer Testimonials

Our customers

 Join our SSi Performance Facebook Group


Latest Performance News

SSi Performance 4th of July Sale Starts now!

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.…

Father’s Day Sale Today! 15% off all programmers with custom tunes and custom tuning

Happy Father’s Day Everyone! Fathers Day Sale Today! 15% off all programmers with custom tunes and custom tuning for today! At checkout use coupon code – Father We hope you all have a great day today!

Memorial Day Sale

Our Annual Memorial Day Sale This Weekend!

Our Annual SSi Performance Memorial Day Sale is this weekend.       You can get 10% to 15% off from Programmers with Custom tuning and Custom tuning only purchases. At checkout use coupon code- MD We want to wish everyone a safe, happy, and enjoyable Memorial Day weekend.  

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