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The Absolute Best in Ford, GM, Dodge, & Jeep Automotive Tuning Performance

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

With well over 20 plus years of tuning experience you get the best in automotive tuning.

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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,

DiabloSport, Superchips Dashpaq,

HP Tuners & More Tuning Platforms all supported here.

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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

Know That WE HAVE YOU COVERED!

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 Performance, The Automotive Tuning Experts (562) 305 3532

For All Your Ford, GM, Chrysler, Dodge, and Jeep Custom Tuning Solutions (562) 305 3532

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


 Specials 2

  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

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Latest Performance News

Labor day

Labor Day Sale starts now! Programmers, custom tuning, Dodge and Jeep ECM swap kits and more!

Labor Day Sale starts now! Programmers, custom tuning, Dodge and Jeep ECM swap kits and more! Payment Methods for sale prices.   Here are the most other than credit or debit cards and get a substantial savings. We use optional payment like Venmo, Cashapp, Western Union, and Ria Money Transfer for out of country customers. Most of these methods can fund with a credit or debit card and is …


Happy 4th of July

Our annual July 4th sale is on now!

Our SSi Performance July 4th Sale is on now. Save Big!   1 tune $125.00, 2 tunes for $175.00, or 3 Tunes for $219.00. Special mods like cam swaps $219.00 include datalogging. https://southernspeedinc.com/optional-payment-methods/   SCT X4s and DBX Programmers with 3 custom tunes included $479.00 shipped. https://southernspeedinc.com/product/sct-bdx-or-bully-dog-bdx-with-3-custom-…


Our Sale on Custom Tunes and programmers with custom tunes is still on!

Our Sale is still on now! 1 tune $125 or 2 tunes for $175.00 SCT X4s and DBX Programmers with 3 custom tunes included $459.00 shipped. Call 562 305 3532 or email [email protected]

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