Possibly.
Tuning companies can't tell you (other than guesses) what effect their tunes will have on engine life. Likely most won't even measure what effect their tunes have on oil quality and service intervals (again just guesses).
If the engine is well built, hopefully not much, but we are talking small, highly stressed diesels here - which have already gone through a lot of testing and optimisation.
The biggest difference is that the tuning companies don't need to comply with emissions laws, so by shutting off EGR, you automatically get an engine that is getting cleaner air and more of it, less buildup of crap in the engine, at the expense of NOx emissions now being noncompliant.




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