Just this past week I finally got the 4088r(bought used) on the truck. Well Everything was working well it seemed or maybe I did not notice since I was so excited, but there is a problem. I noticed a vibration in the truck and started looking and figured out it was the turbo. I found a chip of the end of one blade on the compressor wheel( did not see it when I inspected it prior to install), so obviously its now out of balance. I guess I need to figure out my options. keep running it or pull it and have it fixed asap. it does not seem to be hitting the housing( I started the truck with the air cleaner off and it spins down nice and clean. No marks. I think something must have gone through it after the install. Anyway I appreciate and ideas you all might have. Thanks