Stage 1
Stage 1 · Diesel · 35 TDI (2.0D) 150hp
Audi A3 2.0 TDI CR Stage 1 file Bosch · 03L906022BQ · SW 398757
Audi A3 2.0 TDI CR Turbo Diesel 103 kW (140 HP)2009, Turbo diesel, 103 kW (140 hp)
150 → 200 HP +50 HP +70 Nm 33% more power
Calibrated ECU file for 03L906022BQ (SW 398757). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 35 TDI (2.0D) 150hp, 2L, Diesel. Engine #266 in our gains database.
- Power
- 200 HP+50 HP from 150
- Torque
- 430 Nm+70 Nm from 360
- Fuel economy
- −8 %−12% full load
Real data from Gains API. Dyno curve = typical ECU-family projection. Final gains depend on fuel, altitude, wear.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 03L906022BQ and software 398757.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Stage 1, Diesel.
Hardware
- No hardware changes required: runs on completely stock hardware
Software / calibration
- Boost pressure optimised within factory turbo limits
- Injection timing & quantity remapped
- Smoke / EGT limiters refined
- DTCs left intact, factory safeties preserved
Stage 1 is a software-only calibration. Compatible with stock turbo, injectors, intercooler, exhaust and clutch.
Product details
This product contains a calibrated Stage1 tuning file for Audi A3 2.0 TDI CR 2009 Turbo-Diesel 103KW with Bosch 03L906022BQ (Bosch software number 398757 ( 1037398757 )). The base stock vehicle for this calibration has a factory output of around 103 kW (~140 HP). This Stage 1 calibration is designed for stock hardware, offering a safe and reliable increase in power and torque for daily use.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 03L906022BQ, 398757 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
C6D66544 BF38EE14 2E56EF17 4CA2D3C5 0A168352 EC717A00 273F8E55 FFF6B599Frequently asked questions
How do I flash this file?
Use your preferred tuning tool (KESS, KTAG, AutoTuner, CMD, etc.) to write the file to the ECU via OBD, bench, or boot mode.
Is the checksum corrected?
Yes. Every file we sell has verified checksums — ready to flash without additional correction tools.
What if I need a revision?
Contact us via WhatsApp or the support dashboard. Revisions for the same stage are free.