We have been custom tuning GM gas vehicles and Ford gas and diesel trucks and cars with OEM experience since 1995 including all the Powerstroke diesels. We have owned and tested on our own vehicles, from the 7.3L to the all new 6.7L, supercharged Mustangs, and all F150s including the new F150 EcoBoost. We know what works and what doesn't. Don't settle for the other tuners who claim to know what they are doing but have never owned any of the vehicles that they sell products for. Don't be a tuning tester! Ask before you buy what experience the company has. We also offer export tuning for vehicles (including the heavy duty trucks - with Cummins and Navistar engines) going to other parts of the world with different fuel requirements - call for more details. Competition tuning and products are available for the true racer, call for details.

Ford 7.3L custom


Ford 6.0L custom


Ford 6.0L custom

FICM tuning

Ford 6.4L

DPF ON tuning

Ford 6.7L

 DPF ON Green tuning

Ford F150 and


Ford 3.5L


Ford 7.3L Powerstroke Ford 6.0L Powerstroke Ford 6.0L Custom FICM tuning 64emblem.jpg Ford 6.7L Custom Tuning Ford Gas Vehicle Tuning Ford F150 3.5L EcoBoost  

Featured Product

KEM SD Card Updater

Click for KEM Updater program information

KEM SD Card Updater Program Link

KEM Performance, Inc. News

Cummins and Duramax Support for the TLAP

KEM is now offering our TLAP for the GM Duramax and Dodge Cummins trucks! See here for Cummins and here for Duramax.

Competition products

We have tuning available for the true racer, information found here. This tuning is for competition use only, never to be used on a public highway. Please call us to discuss your racing needs. All of our competition products require a signed and notarized affidavit faxed or mailed to us before the tuning / products will ship. The affidavit can be downloaded from here: Affidavit

Export Vehicle Tuning

Do you have a vehicle that needs tuning for the different fuels in other parts of the world? Well look no further than KEM. We can do export tuning on all Ford vehicles and many brands of commercial vehicles (proof of export will be required). Call or email us for more details.

File Update Information

Link to KEM Updater Program information: KEM Updater

KEM Performance 6.7L Powerstroke runs 14.4 at the track!

Check out the video and time slip for our tuned 6.7L (fuel only, no nitrous or propane) at the track.  

KEM Performance and Rudy's Diesel Performance at the track!

With KEM Performance tuning, Aaron ran his highest MPH for a 6.4L truck, 10.7 at 133.76!  


We do not sell or ship products without an E.O. number to California.



2015 Ford SuperDuty 6.7L tuners and tuning now available on SCT X4 and Livewire TS products!



We have been tuning the 6.7L longer than any other company and know what works and what doesn't. The tuner comes with 3 power levels: Tow, Performance, and our RACE DPF ON All-Out file. Please Note: These are on highway use files only! It will require that all of the emissions equipment is installed and operational on the truck. Attempting to use this on a deleted truck will cause issues! We recommend that your truck have the latest Ford flash for best tuning operation and the most power.

After ordering, you will need to send an email with the VIN, engine and transmission strategies, and all mods done to the truck.

For more information or to order, click on the product picture below.

Livewire TSX4


Competition tuning available, see HERE.



Free shipping on orders over $50!


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