Audi and VAG News – Diagnostics, Service and Repairs | Szulc Motorsport | Szulc Motorsport

15Oct2026

Audi Q8 3.0 TDI – Oil Filter Too Short

The engine ticked when cold but stored no fault codes. The cause was an oil filter element approximately 4–5 mm too short, which failed to fully close the drain valve inside the filter housing and continuously affected oil circulation.

30Sep2026

Oil Pressure Modification for 2.0 TDI and 3.0 TDI

Low oil pressure at low engine speeds may reduce lubrication in 2.0 TDI and 3.0 TDI engines. We individually calibrate the oil pump control strategy for the specific engine and its factory oil specification.

15Sep2026

ECU Security Key Toyota & Lexus – Why ADAS Still Fails After Radar Replacement

New radar installed and calibrated, but ADAS warning lights remain on? Discover why ECU Security Key Writing is often the missing step.

15Sep2026

Gearbox Chiptuning Without Shortcuts — Common Flaws and Proper Calibration

Raising pressures or shifting maps by a flat percentage is not a universal chiptuning solution. Learn how proper automatic transmission calibration preserves mechanical durability and performance.

30Aug2026

Audi A6 C8 S-Tronic DL382 – What the Previous Workshop Missed

Jerking after gear changes and drivetrain bind-up during tight turns led us to inspect every oil circuit, the quattro Ultra clutches and the rear final drive. The findings revealed the true extent of the earlier work.

15Aug2026

Audi TFSI at 107°C – Thermal Management and Safe Temperature Reduction

A factory coolant target of 105–107°C may be part of the control strategy, but it is not always the best choice for long-term engine durability. We explain when earlier cooling makes sense.

30Jul2026

EA888 evo5 Inside – Design and Service of the New 2.0 TSI

500-bar fuel injection, a VTG turbocharger and lambda 1 operation. See what has changed in the EA888 evo5 and how this new 2.0 TSI should be diagnosed and serviced.

15Jul2026

Higher Oil Pressure in 1.5 TSI and 2.0 TSI Engines

Does the factory oil pump remain in the low-pressure range for too long? See how software-based oil-pressure strategy modification works.

30Jun2026

Automatic Transmission Shifts Too Early? Shift Points

Does the transmission keep the engine at 1,100–1,300 rpm, select higher gears too quickly and delay downshifts? We determine whether the cause is the factory TCU strategy or a fault requiring diagnosis.

15Jun2026

Audi RS6 C8 4.0 TFSI – P0300, P0303, P0305 and P0363 Misfire Faults

Rough running under load, reduced power and a fuel smell in the engine oil. A factory ECU update did not solve the issue. Live Data, borescope inspection and fuel system diagnostics pointed to the correct repair path.

30May2026

DSG DQ381 and DQ500 – P1735, P1736 Faults and Loss of Gears

Has the gearbox lost some gears, entered emergency mode or stored P1735 or P1736? We first determine whether the fault is related to sensors, electronics, hydraulics or the mechanical section of the transmission.

15May2026

Audi Oil Service 2.0 TFSI, 3.0 TDI, RS7 – Warsaw / Wyszkow | Szulc Motorsport

Precision Lubrication Audi / VAG

30Apr2026

Audi RS7 4.0 TFSI After ECU Tuning – Ignition Retard, Lean Mixture, Carbon Buildup and Cylinder Endoscopy

Rough running under load, ignition retard of up to 10°, a lean condition on bank 2 and heavy carbon buildup. Data Logging, spark plug inspection and cylinder endoscopy showed that engine condition had to come first.

15Apr2026

Audi 3.0 TDI Rough on Cold Start – EGR, Charge-Air Cooler and Intake Diagnostics

Modern V6 TDI engines require a full check of both EGR circuits, coolers, airflow and cylinder balance — not parts replacement by trial and error.

18Sep2023

Mercedes-Benz Delphi CRD3 – ECU Cloning and Programming in Bench Mode

The new Bench Mode protocol enables reading, writing, copying, cloning and data transfer for Mercedes-Benz Delphi CRD3 ECUs with TC1793 and TC1797 processors. EEPROM, Recovery and replacement ECU programming are also supported.

28Nov2022

New ECU protocols — Scania, Ford Transit, Opel Movano, Iveco, Hyundai, Kia and Toyota

We have expanded ECU support with real reading for Scania Continental EMS S8, EMD1 and EME1, OBD programming for Ford Transit and Opel Movano, Bench Mode for Iveco, Hyundai and Kia, and Toyota Bosch ME17.9.53 cloning.