What is the Magnuson Moss Act? According to the Act, an automobile manufacturer cannot void your vehicle warranty due to the installation of aftermarket parts. Unless the aftermarket part that caused the vehicle failure or contributed to it (15 U.S.C. 2302 (C)).
This is what provides relief and guidance in regards to aftermarket mods to a vehicle. As always, it’s subject to interpretation, but this is the law.
Regarding the term “full exhaust” a full exhaust is from the exhaust manifold all the way to the exhaust tips. Interpreting the above act in regards to an engine or related failure on a vehicle with a “full exhaust” is all upon interpretation (and relationship with your dealer however a catastrophic failure is above the dealer determination and will likely involve FCA as a full exhaust entails changing the stock cats with high flow cats which in most cases can be argued as a reason for said failure. Per the act, and modification that changes the factory emissions parameters is cause to void warranty on any system affected by said modification. Same goes for tuners and the like. It’s a vague and arguable area and the manufacturer obviously has the wherewithal to fight and win.
