I have a 2013 Audi A8 4.0T, twin turbo. Having researched on google where to best add the cleaner, it states you should NOT add 2611 through the intake boot because it can cause hydro lock by pooling in the turbos and intercooler. I am having trouble determining where to add it to the vacuum line as I can't see the PCV or vacuum pump due to their location. Any help would be appreciated.