I handed over Bosch injectors for inspection a long time ago. To be honest, I have never seen a more human and professional approach in the services. No divorce. About 16 injectors were tested in order to assemble 2 sets for Golf and Passat. If the injectors were in the block, they didn't even ask for money to check them. The cars have been flying for a year, the dynamics are excellent, the consumption is minimal! Manager Alexander is in his place! I recommend to check the nozzle pump!!!