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Providing the Absolute Best

in Automotive Tuning Performance


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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 got you covered!

Ford, GM, & Dodge Truck Performance

Second to None Ford Ecoboost Tuning

Towing the Boat

...To the Job Site the Race Track.

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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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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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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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GM Custom Tuning

Camaro, Corvette, Trucks & SUV's

No Compromising Performance..

Unmatched Industry Best Power, MPG's, and Drivability.

A Complete Custom tune

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.

Valentines Day Special Today Only – 1 Tune $100 click here


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There is a reason why SSi Performance is #1 in Custom Tuning

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    Ford, GM, & Dodge Tuning Professionals

    Challenger, Mustang, Camaro,  and more..   Read More

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

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    Ford, GM, & Dodge – TRUCKS & SUVs

    F150, Ram, Silverado, Jeep and more.. Read More

Join our SSi Performance Facebook Group Here



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

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“Providing Tuning Excellence is what we do”



Congrats to Josh for his best SHO track time to date. 12.24@112

Josh came to SSi Performance after his disappointment with LMS, Unleashed, and brew city tuning. Not one of them could get him better than 12.9. This just highlights the SSi Dominance once again. Congrats Josh! Video below. Not the best quality however you can hear the announcer 12.24@112. [wpdevart_youtube]lU8bcxSLeuY[/wpdevart_youtube]


Jesus G sets new SHO Record. 11.95@115.99 with Tune and Bolts-Ons!

Congrats to Jesus for setting a new record at Sacramento on 11/10 with an outstanding 11.95@1115.99 mph. Colorful video-    

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