An Overloaded Diesel Particulate Filter is Expensive.

Replacement costs serious money. A new DPF can cost between 1,000 € and 6,000 €. Replacement also involves a lengthy garage visit plus possibly an expensive replacement vehicle.

The TUNAP Solution: Cleaning Instead of

  • Makes for customer satisfaction
  • DPF is back at work quickly
  • DPF cleaning does not require expensive removal
  • Our solution is technically approved by leading makers
  • Enormous cost savings
  • Preventive measures that keep your clients mobile long term
  • Proven over a quarter of a million times

TUNAP Diesel Particulate
Filter Cleaning
microflex® 931 and 932

The cleaning set for diesel particulate filters (DPF) consists of a nonflammable and metalfree cleaning liquid and a rinsing solution. The process developed and patented by TUNAP functions without time-consuming removal of the DPF.

  • Cleaning without disassembling the particulate filter
  • Nonflammable
  • Neutral ash- and metalfree formulation
  • Residue-free evaporation
  • Material compatibility

Before / After Effetcts



The electronic indicator lights, the vehicle has no more power and an extremely high fuel consumption? The diesel particulate filter has only a limited capacity to store particulates. From a certain amount of soot, the soot particles must be burned in a regeneration process to CO₂ and ashes. Different reasons can cause the regeneration process does not start and in consequence the DPF gets clogged with soot particles.


Remove the pressure sensor or disconnect the filter from exhaust pipe and instert the spraying probe into the opening made with the direction of spraying towards the particulate filter. Flush out the particulate filter after cleaning using the flushing concentrate. Reinstall the pressure sensor or assemble the filter to the exhaust pipe and allow the engine work with varying speeds for approx. 15 minutes. At the end perform a test drive of at least 30 minutes and start the filter regeneration manually using the tester, if necessary.


TUNAP is the first manufacturer to have developed a patented particulate filter cleaning system with which clogged particulate filters can be cleaned in an installed condition, rapidly, simply and significantly more economically than replacing them.


microflex® 931
Particulate Filter Cleaner

Product Information                                      Material Safety Data Sheet

microflex® 932
Flushing Concentrate

Product Information                                      Material Safety Data Sheet