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in Automotive Tuning Performance

Providing the Absolute Best


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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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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


Second To None Ford Ecoboost Tuning

Towing Your Boat

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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GM Custom Tuning

Camaro, Corvette, Trucks & SUV's

No Compromising Performance..

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

A Complete Custom tune

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With Your Investment

When it comes to Performance Tuning

Dont Trust Just Anyone

Reliability, Power, MPG's and Excitement

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.


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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

  • Ecoboost Towing

    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

Our customers

 Join our  Facebook Group Here



Latest Performance News

Michael Byrum runs a 12.40@107.42 in 2300 plus DA with his 2016 F150 4WD F150 Ecoboost Super Crew 4 Door

Michael Byrum runs a STUD 12.40 flat in 2300 plus DA with his 2016 F150 4WD F150 Ecoboost Super Crew 4 Door with SSi Tune. Great Job!

Ron Pudell sets Fastest F150 2.7 4WD Record with12.94@102 with SSi Performance tune only. Video Inside with slip and pics.

A Huge congrats go out to Ron Pudell today with an outstanding 12.94@102 mph run in Atlanta. The best part was he did this in DA conditions of around 2600-3000. This makes him the fastest 4wd F150 2.7 in the land. Nice Job!

SCT Rebate Program…April 18 to May 18…. $$$

Don’t Miss Out! Don’t Miss the SCT® Tax Time Rebate April 18 – May 18, 2017. When your customers purchase a X4, Livewire TS+ or ITSX Tuner from you, an authorized SCT retailer, they can submit their purchase information to qualify for a rebate. The reba…

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