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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.

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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

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

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“Providing Tuning Excellence is what we do”


SHO dyno compare with SSi LMS Unleashed

Customer does a Dyno Compare with 3 different tuners products for his 2015 SHO

Rich McGrath does his own dyno compare with tunes he has for his 2015 SHO. 91 octane. Since he has all 3 tuners product what better measuring stick could you have? Now you see why he dropped .5 off his best time at the track with a SSi Tune. SSi is Red LMS is Blue Unleashed is Black

Gearheads in Arlington Texas does a dyno pull with SSi2 5150 93 octane. 429 hp / 610 ft lbs trq! Check out Video Inside

Gearheads in Alington Texas does a dyno pull with SSi2 5150 93 octane. 429 hp / 610 ft lbs trq. [wpdevart_youtube]kyz3DE32_3Q[/wpdevart_youtube]

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