Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Porsche for this TSB. Call your local Porsche dealer's service department & ask for a copy of TSB# TI-41-09-2.
PORSCHE: REPLACING HIGH PRESSURE FUEL INJECTORS (WORKSHOP CAMPAIGN). A VOLUNTARY WORKSHOP CAMPAIGN ON CERTAIN MODEL, MODEL YEAR VEHICLES CONCERNING THE POSSIBILITY DEFECTIVE HIGH PRESSURE FUEL INJECTORS MAY HAVE BEEN INSTALLED IN THE ENGINES ON THE AFFECTED VEHICLES. AS A RESULT, THIS CAN CAUSE MALFUNCTIONS IN THE HIGH PRESSURE FUEL INJECTORS, THE MAIN SYMPTOMS OF WHICH MAY BE A ROUGH RUNNING ENGINE, WHICH MAY BE NOTICEABLE AFTER DRIVING THE VEHICLE FOR ONLY A SHORT TIME. MODELS, MODEL YEARS CAYENNE S, CAYENNE S TRANSSYBERIA, CAYENNE GTS, CAYENNE TURBO, CAYENNE TURBOS 2009-2010. *PE
