A lot of good reviews about the Synapse blow off valve, it's inexpensive too.
I'm sure dirt ends up getting inside the horn of the blow off valve while driving and ends up getting stuck to the piston which in turn scores the sides and it eventually seizes.
This is probably why the recommendation for maintenance every 6 months. I ended up twisting the valve 90 degrees, facing the passenger side. 2 years, no issues so far (knock on wood).
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'08 Infiniti G37s - Forced Induction Fed
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