All returns must be made within 30 days of delivery. A valid Return Merchandise Authorization (RMA) number must be first obtained by calling VAP INC. at (800)826-9886. A 10% handling and restocking fee will be assessed for each item returned unless you have made other arrangements with Car Tuner Pro. All return shipping charges must be prepaid by the buyer. There are no refunds on shipping. All returned items must be in a new, resalable condition.