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in Automotive Tuning Performance

Providing the Absolute Best You Can Get


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Nearly every make and model. Ford, GM, Chrysler, & Jeep.

Custom Tuning

Virtually EVERY Platform


Diablo Sport

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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 SHO 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 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 R/T, SRT, Scat Back, Drag Pack or HELLCAT

SSi Performance Delivers Everytime

Go with Proven Experience

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

EcoBoost Tuning / Ford, GM, Chrysler, and Jeep Custom Tuning

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


SSi Home of the fastest

  • gm tuning

    Ford, GM, & Dodge 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

    Performance tuning for F150, Ram, Silverado, Jeep and more

    Read More

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. Whether it be ecoboost tuning/Ford tuning or another platform, Don’t trust the newbie competition with your custom tuning needs. Put our 17 years of experience in performance tuning to work for you. There is a reason we are the leaders in performance tuning – Nobody else comes close. We don’t say that to brag, we say that because our custom tuning options are proven to be the fastest, most drivable and most reliable in the industry. The numbers and customer testimonials speak for themselves.

We are famous for Ford tuning, in particular, ecoboost tuning where we hold the record for the fastest Ford F-150. We literally have thousands of hours dedicated to learning the ins-and-outs of ecoboost tuning. This platform is very intricate, so it really takes a lot of skill and knowledge to get it perfected. Another example of ecoboost tuning we specialize in, is the Ford Taurus SHO. We have customers who have gone from high 12’s to low 12’s just by switching to our tune. When it comes to Ford tuning, we are the hands-down industry leaders.

We also offer GM tuning as well as Chrysler tuning. We are a step ahead because we eat, sleep and breathe performance tuning; it’s all we do. When you are ready to go from the kiddie pool to the Ocean, buy one of our custom tuning options and see how much power and drivability you have been leaving on the table.

Click here or on the “Our Customers” logo below for Customer Testimonials

Our customers

 Join our  Facebook Group Here


Latest Performance News

2014 F150 12.57

New 11-14 F150 Ecoboost Stock Turbo Record [email protected] By Steven Smith! Video Inside!

Records are made to be broken. This is exactly what Steven Smith did today with SSi Performance Tuning. Video Below. Huge Congratulations goes out to Steven Smith in his 2014 F150 Ecoboost for a record [email protected] MPH! This is the Fastest Stock turbo 11-14 F150 Ecoboost Record To Date!  Thank You Steven for Show Casing the SSi Performance Dominance we ahve enjoyed for many years at the track…

SCT Software support

SCT 2017 & 2018 Additional Custom Tuning Support Is Released!

 SCT Performance® is adding even more coverage to our SCT BDX Performance Programmer. The latest application additions now available for Custom Tuning on the SCT BDX Programmer include the 2018 Ford F-150 3.3L,  2018 Ford F-150 2.7L, and the 2017 Ford F-150 3.5L Ecoboost for Engine and Transmission Support.*   2018 Ford F-150 3.5L EcoBoost Engine and Transmission Custom Tuning Suppor…

How Well Do We Tune 2017 F150 2.7 Ecoboost? Ask the Supercharged 6.2 …

Tune Only 2017 F150 Ecoboost 2.7 vs SC 6.2. SSi performance Customer Travis W with his 2017 2.7 Ecoboost F150 beats down a Supercharged 6.2 on the street. Amazing what these Tune Only 2.7s will do with the right magic, Nice run Travis and way to show case the SSI Performance dominance!  

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