Not true unless that part causes a failure... and can be proven to have caused an alleged failure. Contrary to popular belief, manufacturers cannot void your warranty if you drive into the service department with a non approved part installed. They can however note your vin # and if you have issues later can "try" to deny warranty work, but it is an illegal practice to void warranties in that manner. A few years ago when the Mitsu EVO first came out in the states (I think it was the MK VII), dealers and or Mitsu reps started hitting the drags strips and noting cars that had been used for racing. In that case, it goes under a completely different legal classification and they can void the manufacturers warranty based on how the end user uses the vehicle. If the "usage" does not fall under the legal warranty agreement, then they don't have to honor it.If mods are not approved, Ford will deny any warranty claims. This goes for Mountune as well of course.
Sent from my GT-N7100 using Tapatalk