OK thanks for the Oliomobile info.
At Mecarun it's more expensive (18 euros + 5 euros shipping) against 15 euros + shipping ?? at oliomobile, BUT you have to go to the Mecarun site to see a very detailed and complete explanation of the qualities of the C99 and the "failures" of the electronic systems of Hdi engines, especially in front of soot deposits everywhere in the mechanical parts and which deceive the calculators (less oxygen => more black smoke from the exhaust when accelerating on Hdi / PSA engines: I saw this x times and I did not understand why) ==>
Modern mechanics are loaded with sensors that electronically control the entire petrol or diesel supply system. But electronics don't just have qualities. Computers often mask problems by making adjustments that distort proper functioning.
Example: when the valves become dirty due to the oil vapors and exhaust gases from the EGR or at the end of the air filter's life, the computer is responsible for reducing the available air flow (note all these vehicles, even recent ones, which smoke black in road traffic).
The injectors are getting smaller and smaller (diameter of a hair), they get dirty very easily, if the amount of fuel is no longer sufficient, the computer will ask for more fuel (black smoke, increased pollution and consumption).
It would seem that the C99 cleans the EGR valves, but I think that when the layer is too old and too important the cleaning should not be able to be completely effective !! ?? Zac what do you think?
Thank you Zac ...... let's see the P18 from mecarun. Does it replace the C99 or is it in addition to the C99?
Only when he has brought down the last tree, the last river contaminated, the last fish caught that man will realize that money is not edible (Indian MOHAWK).