Refund policy

Effective Date: November 11, 2026

Thank you for choosing 4J Tuning. We are committed to providing quality automotive calibration solutions, tuning software, digital products, and related hardware.

Due to the specialized and often non-recoverable nature of our digital products and services, certain purchases are considered final. Please review this policy carefully before placing an order.

1. Digital Products & Calibration Files

All digital product sales are final and non-refundable once the files have been delivered, made available for download, or custom work has begun, except as required by applicable law or otherwise stated in this policy.

This includes, but is not limited to:

  • ECM and TCM tuning files

  • Custom vehicle calibrations and performance tuning files

  • XDF, A2L, and other calibration definition files

  • ECU/TCU software and data files

  • Downloadable software and digital utilities

  • Custom-developed or modified calibration files

Because digital products can be downloaded, copied, and retained after delivery, we generally cannot accept returns or issue refunds for changes of mind, accidental purchases, or incorrect product selections.

Customers are responsible for verifying vehicle compatibility, ECU/TCU part numbers, operating system versions, and supported flashing equipment before purchasing.

If you are unsure whether a product is compatible, please contact us before placing your order.

2. Software Licenses & Subscriptions

Software products, including DTC Toolbox and other 4J Tuning applications, may be offered under lifetime, annual, or subscription-based licensing arrangements.

The following conditions apply:

  • Activated software licenses are generally non-refundable.

  • Purchasing the wrong license edition or failing to review software requirements does not automatically qualify an order for a refund.

  • Subscription cancellations stop future renewals but do not automatically provide a refund for the current billing period.

  • Refunds are not generally provided for unused portions of an active subscription.

  • Software functionality, compatibility, and system requirements should be reviewed before purchasing.

If a purchased license cannot be activated or the software does not function as advertised, please contact our support team. We will make reasonable efforts to resolve the issue.

If we cannot provide the purchased functionality or resolve a verified product defect, we will evaluate appropriate remedies, including a replacement, correction, or refund.

Nothing in this section limits any rights or remedies provided by applicable law.

3. Incorrect Files, Compatibility & Customer-Provided Information

Customers are responsible for submitting accurate information when ordering custom tuning services or purchasing vehicle-specific products.

This includes:

  • Correct vehicle year, make, model, and engine specifications

  • Correct ECU/TCU identification and operating system information

  • Accurate original calibration files when required

  • Compatible flashing tools and software

  • Accurate vehicle modifications and configuration details

If incorrect information is submitted, we may offer a correction at no additional charge when work has not yet begun.

If a calibration has already been developed, additional charges may apply for rebuilding, modifying, or replacing the file. Any applicable rework fee will be communicated before additional paid work begins.

Errors caused by 4J Tuning will be corrected at no additional charge. If we cannot correct a verified error or provide the product as described, an appropriate refund or other remedy may be offered.

4. Digital Delivery Issues

Digital products may be delivered by email, direct download, customer account, or another electronic delivery method.

If you do not receive your purchased product:

  1. Check your spam or junk email folders.

  2. Verify the email address provided during checkout.

  3. Review your order confirmation for download instructions.

  4. Contact support@4jtuning.com with your order number.

We will investigate delivery issues and provide replacement download links or resend eligible files when necessary.

If we are unable to fulfill your order, you may be eligible for a refund.

5. Physical Products & Hardware

Physical products, including automotive tuning devices and related accessories, are subject to different return conditions from digital products.

Proposed hardware return terms:

  • Return requests must be submitted within 14 days of delivery.

  • Products must be unused, uninstalled, unregistered, and in their original packaging.

  • Products that have been activated, registered, VIN-linked, or otherwise associated with a vehicle may not be eligible for return.

  • Returns must receive authorization from 4J Tuning before being shipped.

  • Customers are responsible for return shipping costs on approved non-defective returns unless otherwise agreed.

  • Original shipping charges are generally non-refundable unless required by law.

If a product arrives damaged, defective, or incorrect, contact us promptly so we can arrange an appropriate resolution.

Manufacturer warranty terms may apply to certain products. All returns and warranty claims remain subject to applicable consumer protection laws.

6. Order Cancellations

Cancellation requests must be submitted as soon as possible after placing an order.

For digital products and custom tuning services, cancellation may be approved if the product has not been delivered, made available for download, or entered production.

Once custom calibration work has begun or digital files have been delivered, the order generally cannot be canceled for a refund.

Physical product orders may be canceled before shipment when fulfillment has not yet been completed.

7. Customer Responsibility & Product Use

Customers are responsible for ensuring that purchased products are suitable for their intended applications and are used with compatible equipment.

4J Tuning is not responsible for issues resulting from incorrect installation, improper flashing procedures, incompatible equipment, unauthorized file modifications, or failure to follow provided instructions, except to the extent liability cannot legally be excluded.

Customers are also responsible for complying with applicable vehicle, emissions, and other legal requirements.

This policy does not exclude responsibility for defective products, errors attributable to 4J Tuning, or rights that cannot legally be waived.

8. Refund Requests & Processing

Although certain sales are final, we understand that unusual circumstances may arise.

Refund requests are reviewed individually, including situations involving:

  • Duplicate or incorrect charges

  • Verified product defects

  • Incorrect products delivered by 4J Tuning

  • Digital files that cannot be delivered or accessed

  • Products that materially differ from their advertised description

  • Other circumstances requiring a remedy under applicable law

Approved refunds will generally be issued to the original payment method. Processing times depend on the payment provider and financial institution.

9. Contact Information

For refund requests, delivery problems, compatibility questions, or general assistance, please contact:

4J Tuning
Website: https://4jtuning.com
Email: support@4jtuning.com

Please include your order number, purchase email address, and a description of your issue so we can assist you efficiently.

We appreciate your business and are committed to resolving legitimate concerns fairly and professionally.

4J Tuning reserves the right to update this policy at any time. Changes will apply prospectively, subject to applicable law and the terms governing existing purchases.