This warranty does not extend to damaged or defect in the finish of a product or to any product, that in the opinion of CORSA Performance®, has been misused, damaged by accident or negligence, altered or modified in any way, faulty installation or installed contrary to CORSA Performance® installation instruction, or repaired by an unauthorized service facility. CORSA Performance® makes no warranty for products installed on vehicles used for race, competition or off-road purposes of any nature whatsoever unless the afore mentioned vehicle has an exhaust system consisting entirely of CORSA Performance® parts. All products that show evidence of abuse, lack of maintenance, improper installation, misapplications and alteration in any way from the original design or negligent use of CORSA Performance® products by the original retail purchaser or by any agent of the original retail material may be subject to a denied warranty claim. CORSA Performance® accepts no responsibility for any costs or grievances incurred by failure of parts; including but not limited to labor or shipping costs