How much of a reliability decrease when power tuning?

The G-Series Tuning Forum is the place to discuss G35/G37 performance modifications and mechanical repair.
2Charlie
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Joined: Tue Jul 09, 2024 10:14 am
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I'm looking at used 2013 G37X HP tune to 400-450. How much of this tuning affect the longevity of the vehicle overall? Should I be worry if I'm going to purchase this vehicle? Thank you.


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