Armyguy5. Sorry i have only partually agree with you, The aftermarket ad-on has to be the cause of the problem with the vehicle, go to the Sema website, i think its
www.sema.org, they tell you that the only way any bolt-on aftermarket product can void your warranty is if that product screws up your car and causes the problem....in other words, let say the mass air sensor is burnt out, in most cases if you have an aftermarket filter (oiled), they can refuse to repair it under the warranty...but it doesnt void the entire cars warranty. my 2 cents
