Refund policy

Clear return procedures matter to us and to your peace of mind. The guidelines below explain how returns, refunds, exchanges, and warranty claims work at Dynamic Diesels.

Order Cancellation

  • Immediate order processing: Once an order is placed, it is processed immediately and a shipping label may be generated and paid for. Because of this, orders cannot be cancelled after purchase.

  • Order already shipped? If you change your mind after your order has been dispatched but before it arrives, please wait for delivery. Once received, you may request a return according to this policy.

  • If you contact us before the product has left our facility, we may try to stop the shipment, but any shipping costs are non-refundable.

Please be sure of your order before completing checkout. If you have questions about a product, email support@dynamicdiesels.com or call 1-877-600-5667.

Items Eligible for Return

The following items can be returned within 30 days of the purchase date, provided they are unopened, unused, and in their original packaging:

  • Tuning devices — including an unopened/unused Mini Maxx V1/V2 or blank EFI Live device

  • Cables and device accessories — including an unopened/unused switch, bypass cable, universal pyrometer, or docking station

Eligible returns may be refunded, exchanged, or replaced with a similar item of equal or lesser value, provided the item meets the return requirements outlined above.

Final Sale / Non-Refundable Items

The following items are final sale and cannot be returned, exchanged, or refunded:

  • Custom tuning — including additional tune files purchased separately or custom tuning purchased with a device

  • Exhausts and race pipes — including downpipes purchased separately from an exhaust system or race pipe

  • EGR kits

Manufacturer warranty coverage may still apply to eligible products that are defective due to a manufacturing issue.

Manufacturer Warranty

All items we sell include a 90-day manufacturer warranty.

If an item is being returned due to a manufacturer defect, it may be returned for a full refund, exchange, or replacement with a similar item of equal or lesser value.

For eligible items being returned for any other reason, the same options apply — full refund, exchange, or replacement with a similar item of equal or lesser value — provided the item meets the return requirements above.

Return Process

All returns must be approved by our team before being sent back. To request a return, email support@dynamicdiesels.com or call 1-877-600-5667 with your order number.

Once a return is approved, we will provide a valid Return Merchandise Authorization (RMA) number and a prepaid return label.

Please do not send any items back without an approved RMA and the return label provided by us. Returns sent without a valid RMA and our provided return label will not be accepted or processed.

Refunds and Exchanges

All returned items are inspected before a refund, exchange, or replacement is processed.

Where applicable, refunds will be issued to the original payment method. Eligible customers may also be offered an exchange or replacement with a similar item of equal or lesser value.

If you have questions about this policy, please email support@dynamicdiesels.com or call 1-877-600-5667.