We offer particle measurement for DPF / diesel particulate filters on diesel vehicles, using the same certified measuring equipment (MAHLE PMU 400) that is used during official CSDD roadworthiness inspections
If the measured particle values exceed the permitted limits, we can immediately carry out the necessary diagnostics on site and provide the required repair solutions to eliminate the issue and prepare the vehicle for the technical inspection.
Diagnostics of gearboxes:
Duration - ~30 minutes
Price - Introductory offer - 25.00 EUR
Particle number (PN) measurement during the technical inspection is mandatory for diesel vehicles equipped with a DPF filter that comply with Euro 5 or newer emission standards, typically vehicles manufactured from 2013 onwards.
During the measurement, the number of solid particles in the exhaust gases is determined. The maximum permissible limit is up to 1,000,000 particles/cm³. If this limit is exceeded, the vehicle fails the technical inspection. For this reason, PN measurement before the inspection allows early detection of a damaged, clogged, inefficient, or removed DPF filter, and enables timely diagnostics and repair to ensure compliance with inspection requirements.
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If the particle number (PN) exceeds the permitted limit, we perform diagnostics to identify the root cause and offer the appropriate repair or solution.
This may include evaluation of DPF / soot filter condition, DPF cleaning, exhaust system or sensor diagnostics and, in certain cases, DPF filter replacement.
Particle number measurement is one of the most effective methods to verify that the DPF filter is functioning correctly and that the vehicle will pass the official technical inspection.
The measurement helps to:
• detect a damaged, clogged, or removed DPF filter;
• avoid failing the technical inspection;
• plan DPF diagnostics or repairs in advance;
• reduce exhaust emissions and environmental pollution.
• Before the technical inspection;
• If the DPF warning light is illuminated;
• After DPF cleaning or repair;
• If there are suspicions of DPF damage or removal;
• Before purchasing or selling a vehicle.
Choose the service you need
SIA PRORING Latvia was founded on November 13, 2013. The company activities are divided into two main areas:
Car service
Production
Production workshop is divided into several departments:
Metalworking department - turning / milling / welding / balancing and construction
Industrial washing department - high pressure and ultrasonic washing
Refurbishment Department - flywheel and clutch refurbishment | refurbishment of steering equipment | engine block, head diagnostics and repair.
The mission of car service is to perform quality car repairs according to the standards set out by the manufacturers.
ISO 9001:2015 and ISO 14001:2015 certificates has also been obtained.
In 2018, we have implemented modernization measures to reduce the amount of hazardous substances used. The measures are implemented with the help and support of the Baltic Environmental Forum from the project "Baltic Pilot Measures to Reduce Emissions of Hazardous Chemicals through Substitution and Resource Efficiency" (LIFE14 ENV / LV / 000174), co-financed by the European Union LIFE Program and Latvian Environmental Protection Fund administration.
SIA PRORING Latvia has concluded contract No. 17.2-5-L-2024/345 on June 17, 2024 with the Investment and Development Agency of Latvia for receiving support for the event "Support for digitization of business processes", within the framework of which a digital transformation solution was introduced, which provides digitization and automation of the company's core business processes.
SIA PRORING Latvia participates in the Recovery Fund project No. 5.1.1.2.i.0/3/24/A/CFLA/004 “Machine-Building Cluster”. The aim of the project is to implement coordinated and targeted activities to strengthen the international competitiveness, export capacity, and innovative capability of the cooperation network members, contributing to the development of the RIS3 area “Photonics and Smart Materials, Technologies and Engineering Systems”. The project implementation period is until June 30, 2026.
SIA PRORING Latvia entered into Agreement No. 9.2-17-L-2025/618 with the Investment and Development Agency of Latvia on 21 March 2025 for the receipt of support.Within the framework of the Recovery Fund, investments are being made to improve business processes.The supported activity is the production and quality control process.
