If you're running them in a 97, then you shouldn't have a problem. The issue seems to be specifically related to 2003-2003 PM Rod engines.
Here's the thing... if it sounds like there's a problem, there probably is one. Engines don't have to rattle excessively to make good power so if it sounds like it's going to come apart then it eventually might.
Of course, it's asking a lot of someone to know the difference between normal diesel rattle and what is too much, but I've had guys tell me "It sure sounded like it was making a lot of noise before the engine let go." If it was enough to get your attention, it was probably too much.
Anyway, if you decide to go with some live tuning, whether through us or anyone else, you'll certainly be better off in the long run.
Take care.
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Power Hungry Performance - The
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