Hello all, I recently picked up a 2009 with 5k miles and loving every minute of it. I'm thinking when I get my car serviced for it's 6k, I'll have Nissan flash to LC4. Can you 09 owners speak to that change? Was it pretty significant on noise and overall smoothness of shifting? Does Nissan charge for doing this flash? If so, what's the damage? Appreciate this forum quite a bit, lot of knowledgeable cool people here.