Okay, I posted this in the wrong forum before. I have a 2011 F350 with the build in the bad valve area. I have an extended warranty good for about another 12000 miles. If this truck does not eat a valve before the end of warranty then I will have the heads rebuilt and the deletes done. Here is my question. I would like to be able to dial back the horsepower from the present 400 to about 350. I haul a 4000 pound truck camper and that is the heaviest I haul. Is there a tuner out there that will let me do this? Second question. Would dialing back the horsepower help with longevity. Thanks for any help on this.