I have already had to warrenty me a new coil pack. I am a Chrysler tech and I was doing the plug wire TSB when I noticed my #1 end on my coil was burnt up. Dunno if it was the wire or coil it self arcing. So after 15,000 miles I have a new Coil pack, all 4 plus wires and plugs. Plugs and wires came per TSB and Coil pack was just burnt up. Fellow techs was like what a pos and couldn't believe it with that few miles already needing a coil pack. You may not gain anything but that is my experience with the stock coil so far.