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Terms & Conditions


U.S. motor vehicle emissions standards are intended to help achieve and maintain air quality goals that benefit human health and the environment. U.S. laws and regulations prohibit operation on public roads any motor vehicle that violates applicable emission standards. The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and other regulatory agencies are responsible for implementing and enforcing applicable emission standards. In particular, the U.S. Clean Air Act (CAA) prohibits “tampering”, i.e., the alteration of certified production vehicles to modify, remove, or render inoperable emissions control hardware or software. Tampering with motor vehicles emissions control systems is punishable by substantial monetary penalties. Consumers are responsible for complying with laws prohibiting tampering, and for ensuring that modified vehicles are operated in compliance with applicable U.S. laws.


It is ZFG Racing LLC’s (“ZFG,” “we,” “our”) policy not to manufacture, offer for sale, sell, convey, or otherwise transfer any product, including Handheld Devices, Pre-Loaded Tunes, or Calibrations that contain features to bypass, defeat or render inoperative the following: EGR, Rear Oxygen Sensors, SCR, DPF, NAC, DOC, or any diagnostic trouble codes (DTCs) associated with these emission controls. Products and calibrations sold by ZFG shall retain the full operation and functionality of the On Board Diagnostic System (OBD) and continue to satisfy applicable emissions requirements.


Although ZFG offers for sale products with CARB EO certifications, we maintain a site-wide policy of NO SALES TO CALIFORNIA.


For More Information our emissions compliance policy please visit our Emissions Compliance page.



Returns will only be accepted within 30 days of the customer receiving the product, and ONLY if a Return Merchandise Authorization (RMA) has been issued. All returns must be brand new and in their original, unopened packaging. A restocking fee of up 25% may applied to all items sold on this website or invoiced by ZFG RACING LLC. Restocking fees are TBD and agreed upon at time of RMA issue.

ZFG RACING LLC reserves the right to refuse any package returned to us without authorization. Returns will be processed within ten (10) business days of receipt (not including weekends, holidays, and the day the package is delivered).

Special order items and electronics are not able to be accepted for return.

If a free shipping item is returned the outbound shipping will be deducted from the refund. The customer is responsible for return shipping as well.

If a customer refuses a package, they will be charged the return shipping fee by the carrier. If the item is free shipping and is refused, the outbound shipping will also be deducted from the refund.

If a customer changes an address, or enters an incorrect address, when placing the order, the customer is responsible for any address change/correction fees billed by the carrier.

Order cancellations are subject to up a 5% cancelation fee. Cancelation fee to be determined at the time of cancelation.

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