it does clean out the 'intake and injectors'.
Used six (6) cans for three (3) fillups (24+ gal tank) on the trip to Napa and now the car has more acceleration from standstill.
Check the trip's condition with this link:
My W140 rules . . . .
It's good stuff but not cheap; $3.00/ can x 2= $6.00 per fillup.