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Providing You With The Absolute Best in Automotive Tuning Performance

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

Our Custom Tuning is Superior with SCT, Bully Dog, DiabloSport,

HP Tuners, All Holley EFI Systems, Superchips Dashpaq, and more programmers.

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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


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

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…

First Ford Maverick to break into the 12’s!

Congrats to Ivan G for his first time at the track with a [email protected] run in his 2022 Maverick. This is the first Maverick to get into the 12’s with SSi Performance Custom Tuning Great Job Ivan! [caption id="attachment_17924" align="alignnone" width="646"] First Maverick to run 12’s[/caption]

Black Friday Sale 2

SSi Performance Black Friday Sale starts today! Save on custom tunes and programmers with custom tunes.

SSi Performance Thanksgiving and Black Friday sales starts today. 10% off Custom Tunes only and Programmers with Custom Tunes. This is for standard Ford, GM, and Chrysler X4s, and BDX programmers with custom tunes. You can double up savings of over $100 with our sale and the coupon from SCT and Bully Dog too.   At checkout use coupon code – BF   Have a Happy and Safe Thanksgiving ev…

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