Stage 1
Stage 1 · Petrol · 1.8 TFSI 120hp
Audi A4 1.8 TFSI Stage 1 file Bosch · 8K1907115B · SW 394389
Audi A4 1.8 TFSI Turbo Petrol 88.3 kW (120 HP) Stage 12009, Turbo petrol, 88.3 kW (120 hp)
120 → 138 HP +18 HP +35 Nm 15% more power
Calibrated ECU file for 8K1907115B (SW 394389). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 1.8 TFSI 120hp, CABB, 1.8L, Petrol. Engine #327 in our gains database.
- Power
- 138 HP+18 HP from 120
- Torque
- 265 Nm+35 Nm from 230
- 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 8K1907115B and software 394389.
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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, Petrol.
Hardware
- No hardware changes required: runs on completely stock hardware
Software / calibration
- Boost / load targets optimised within factory hardware limits
- Ignition advance refined for the running fuel grade
- Throttle response and torque request remapped
- Factory safeties (knock, lambda, EGT) preserved
Stage 1 is a software-only calibration. Compatible with stock turbo, injectors, intercooler, exhaust and clutch.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Audi |
|---|---|
| Vehicle model | A4 |
| Model year | 2009 |
| Displacement | 1.8 L |
| Fuel / Induction | TFSI (Turbo Petrol) |
| Factory power | 88.3 kW (120 HP) |
| ECU manufacturer | Bosch |
| ECU ID | 8K1907115B |
| ECU software | 394389 |
| Calibration stage | Stage 1 |
| Cylinder capacity | 1798 CC |
| Compression ratio | 9,6 : 1 |
| Bore × Stroke | 82,5 X 84,1 mm |
| OEM engine code | CABB |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
Engine performance matrix
Power, torque and fuel-economy figures for every tuning stage on this engine, sourced from the tuning-database Gains API. Values are healthy-engine crank numbers; real on-road gains vary with fuel, altitude and mechanical condition.
| Stage | Power | Torque | Δ HP | Δ Nm |
|---|---|---|---|---|
| Original / Factory | 120 HP | 230 Nm | — | — |
| Stage 1 | 138 HP | 265 Nm | +18 (15%) | +35 |
| Stage 2 | 146 HP | 278 Nm | +26 (21.7%) | +48 |
| Stage 3 | 198 HP | 357 Nm | +78 (65%) | +127 |
| Stage 4 | 234 HP | 426 Nm | +114 (95%) | +196 |
About this calibration file
The Stage 1 calibration for the 2009 Audi A4 1.8L TFSI (Turbo Petrol) is a drop-in remap that works on completely stock hardware — no turbo, injector, intercooler or fuel-system upgrades required. Injection timing, boost targets, rail-pressure limits and torque maps are rebalanced to extract the safe headroom the OEM leaves untouched for fleet-fuel tolerance, altitude margin and warranty buffer.
This file matches a Bosch ECU and software version 394389. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
Projected output on a healthy, stock-hardware example of this engine: 138 HP and 265 Nm at the crank — a gain of +18 HP (15%) and +35 Nm over the factory 120 HP / 230 Nm baseline. These numbers are sourced from our Vehicle Performance Database, which aggregates dyno results across this engine family. Real-world gains depend on fuel grade, ambient temperature, mechanical condition and intake/exhaust state.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
Product details
This product contains a calibrated Stage1 tuning file for Audi A4 1.8 TFSI 2009 Turbo-Benzin 88.3KW with Bosch 8K1907115B (Bosch software number 394389 ( 1037394389 )). The base stock vehicle for this calibration has a factory output of around 88.3 kW (~120 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 8K1907115B, 394389 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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