The technical answer is any aftermarket part you do will void some part of the warranty. The way the warranty works is if the aftermarket part can be linked to the issue then it isn't covered under warranty. However if aftermarket parts can't be linked to the issue then it "should" be covered under warranty. Now notice should is in "". That is because as you will hear from others and if you search you will find it varies depending on what dealer you are working with.Question
If I was to do a cat back exhaust, cold air intake & little tuning, I assume it would void the warranty. So what can you do without voiding the warranty?
I mean that is what I have always struggled with when I have had a Mustang under warranty. haha I normally just leave the motor and trans alone as those are you to biggest cost items that a warranty really comes in handy for.I will probably wait about 33 months then