Returns & Refunds are available on some products and are case by case basis depending on the specific product and specific situation.  Any product that is to be considered for return, must be returned within 30 days of customer purchase date at customer expense, unopened and in original factory packaging.   CUSTOM TUNING IS NON REFUNDABLE.  All returns & refunds are subject to a 20% re-stocking fee.  Any product that has been installed is not eligible for a refund.  All returns must be approved by Voodoo Diesel management.  Don't hesitate to contact us with any questions at or 816-800-9136.