X66p. The p refers to it being a pull tab top. To induce it through the plenum one must look at the vacuum lines and find a nice sized one that comes from the central plenum (not an individual intake runner as that would only do one cyl). Read the directions on the can and allow enough to be slowly pulled into an engine running slightly above idle (through a small piece of hard vacuum line). Allow it to run in fast enough to slow the engine speed and roughen the idle. do this til the can is gone.
Bosch Master, ASE Master, L1
33 years MB technician