I am looking at a Carbonio CAI and considering swapping my DVFSiT valve out of the ride.

The one that I am thinking of buying has 4 months and 5k miles of drive time on it.
The price is right for me, so I'm wondering if there would be any reason NOT to buy one that's used.
Or, at least used for 5k miles.

Thanks for the help. Any and all feedback here is appreciated.
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I don't think CAI go bad.

 

That's how I understood it as well, but I always try to check here to make sure that my thoughts match up with what the truth is.