Vehicles & Firmwares

“I’ve used over 32 different EM’s and ROM editing software packages, I feel ProEFI has it all. As a tuner, there’s no better feeling than knowing when a customer’s car leaves, not only will it perform consistently no matter the conditions, but the engine will be protected if something unexpected happens.”
 – Chris Delgado, ProSPEED Autosports
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using or installing any Professional EFI Systems Inc. product.
In many states, it is unlawful to tamper with your vehicle’s emissions equipment. Professional EFI Systems Inc. products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road or highway. Using Professional EFI Systems Inc. products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists. (more information can be found on for state by state details in the USA)
Scroll to top