The PCV won't violate your warranty unless it is the cause of a repair which is almost impossible. In years of following these forums I have yet to hear of an issue like this. As Pidnaul said if you're worried about it you can remove the PCV quickly before any warranty or other repair/maintenance work by the dealer.

 

wish i could find someone knowledgeable with the pc-v in my area, eastern oklahoma. oh well, keith sent me a map via email immediately to get my 08 sg running right, still a bit rich with the canned map for the se ac, rinehart slip ons, and the stage 1 download. now i think i may just get ta tweakin, or better yet, find someone who's not a rip off with a dyno. any suggestions? sure made mine run lots better though even with the canned map for my application. thanks guys at fuel moto, you rock.

 

I think with most all open pipes you're going to get decel pop/gargling. As for me, as much as I don't like decel pop and equate it to a lean condition, this is why it's important to adjust it on the Dyno and go by what the readout tells you. As long as I know I'm close to the 13.8, which I'm actually a hair above and still have decel pop, I'm good to go and fatter than stock!