Now I know they send a bunch of these out in hopes to get people to come in. But 52k really this has got to be an F up. I bought my Z in Sept 09. It just reached 3500miles. I could see something more along the lines of a 10-20k tune. Maybe this is there way of over extending to the general people and try to get any sort of excess crap they can perform on someones car for money. If there dumb enough to go for it then why not have, get paid to do something that doesnt really need to be done.