I just installed a turbo inlet elbow, and during the install, noticed some serious marring on the intake of the turbo... :eek:
https://drive.google.com/file/d/0B3F3IFcfXhD2SmJxOE93cS1IYzJxeThERHF4cWxYM1gza3Bn/view?usp=sharing
what is it? and is it normal? It's a brand new 2018 with less...