Turbo Damage After using CRC intake valve and turbo cleaner on carbon buildup in a GDI or direct injection engine. Valve gunk will hurt your turbocharger if not maintained. The carbon chunk will break off eventually if it isn't cleaned with intake valve cleaning. but the cleaner itself could cause this. I show how to use intake valve cleaner. I give proof does intake valve cleaner work? before and after testing Liqui moly valve clean i also review seafoam another spray cleaner to seevif it works then compare stp direct injection fuel injector cleaner. Is intake valve cleaner safe for turbos ?