Guys I have a stock 2012 golf R with 30k miles and a possible dead turbo. Symptoms are a loud siren noise when accelerating and loss of power. Going past 35 miles per hour is almost impossible. I believe it's in limp mode. I have no light indicators on my speedo. No blue smoke. Though maybe a little white smoke. Can any one here give me some good guesses as to what maybe the cause? I need everyone's best case scenario guess"s and cost to replacemt parts list. Do I just buy a Ko4 0064 alone? And pay for what ever my guy charges? I don't plan on taking it to the dealer. Though I want to get my own parts incase my local shops throw in some cheap made in china turbos. I prefer oem Borg Warner. And is there any additional parts or tubing necessary? I've seen some go for 1400 range. Thanks guys.