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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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    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

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Latest Performance News


Congrats to Ron Pudell for his 13.05@102.11 in his Bone Stock 2016 2.7 F150 Ecoboost 4WD

Ron only got 2 runs in that night as the track closed early however he got his personal best.  This truck is full weight just as you would drive this 4X4 off the showroom floor. Good run !  

Dyno Testing SPD Performance Inc Turbo Adapters on 2016 F150 3.5 Ecoboost with Impressive Bolt On Results!!

Having seen these things on the market recently we decided to check out the SPD Performance Inc. Turbo Adapters for ourselves to see if these things actually worked. I must say we were skeptical about the product at first however the results speak for themselves and are impressive for a true bolt on Ecoboost product. We did the testing with a moderate 91 octane tune with stock and then with the SP…


Ben Lambert first time racing his 2016 F150 Ecoboost runs 12.69@103.84 Bone Stock on Pump Gas

Ben Lambert’s first ever 1/4 mile run with his 2016 F150 3.5 Ecoboost. What is really nice about his time is it is Bone Stock right down to the filter as you would drive it off the dealership floor! Better yet…On Pump Gas and into a head wind!!  Damn fine run Ben! Congrats  

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