11-10-2012, 12:19 PM
Never done on HDis... But on XUD9s it quietens down the injector pump a lot and I found it definitely makes the injection noise a bit quieter, just felt smoother... That was over a prolonged peroid of tests... I could always feel the difference with it in....
Lucas pump it definitely made quieter, Bosch not so much, but the actual injection noise it definitely changes - from a sharp clack to a more muted "clock" noise... Whether that's helping combustion, feck knows, some might say it's causing it to reduce the cetane and not burn as quick... Who knows... It'll definitely help the pump though with todays ultra low sulphur diesel... Back when VE pumps were made, they were designed for very high sulphur content in Diesel...
Lucas pump it definitely made quieter, Bosch not so much, but the actual injection noise it definitely changes - from a sharp clack to a more muted "clock" noise... Whether that's helping combustion, feck knows, some might say it's causing it to reduce the cetane and not burn as quick... Who knows... It'll definitely help the pump though with todays ultra low sulphur diesel... Back when VE pumps were made, they were designed for very high sulphur content in Diesel...
