I am tuned but it really has no effect on the failures. The design is less than perfect for the application and the engine builder has been known to use some less than perfect building techniques. But seems like luck of the draw to get a good one or not.

A huge thing is these engines do not do well with low rpm loads where diesels are renowned to shine. I think a lot of people expect them to chug along at 1500 rpm with a load like a Cummins power stroke etc and it just kills them. I keep mine around 2000 rpm or higher towing still easy on the fuel and oil analysis says it’s wearing well.