I was told that I might need to get my timing chain replaced before i get a tune, due to the fact that i have 90k miles and the 08s' chains are infamous for stretching.. So I started doing research online and there's not really too many posts about getting the timing chain replaced, so I was (not safely) assuming that its not too much of a common problem? Has anyone had an issue with their timing chain? If so how big of a hole did the repair burn in your pocket??? I was just about to order a bunch of new parts to put on before my tune, buuut now i'm pretty nervous about this.. If anyone can help me out it'll be appreciated!