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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

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”


SSi NexGen Tunes are released! All Fords Supported.

We took our industry best drivability and power to a whole new level. Smooth, predictable, repeatable power right off the throttle thru the mid range and at wide open pedal. Power at all throttle positions.  As we have always had the best drivability, shifting, and power we raised the bar once again. The feedback from the customers is out of this world. The people coming from other peoples tunes …

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

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