Stage 1
Stage 1 · Diesel · 4.2 V8 32v TDI 326hp
Audi A8 4.2 TDI CR Stage 1 file Bosch HW 0281012503 · 4E1907409 · SW 377564
Audi A8 4.2 TDI CR Turbo Diesel 239.8 kW (326 HP) Stage 12007, Turbo diesel, 239.8 kW (326 hp)
326 → 380 HP +54 HP +230 Nm 17% more power
Calibrated ECU file for 0281012503 (SW 377564). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 4.2 V8 32v TDI 326hp, BVN, 4.2L, Diesel. Engine #10784 in our gains database.
- Power
- 380 HP+54 HP from 326
- Torque
- 880 Nm+230 Nm from 650
- 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
-
Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
-
Match the numbers
Your read must show hardware 0281012503 and software 377564.
-
Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
-
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.
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 | A8 |
| Model year | 2007 |
| Displacement | 4.2 L |
| Fuel / Induction | Turbo Diesel |
| Factory power | 239.8 kW (326 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0281012503 |
| ECU software | 377564 |
| Calibration stage | Stage 1 |
| OEM engine code | BVN |
| 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 | 326 HP | 650 Nm | — | — |
| Stage 1 | 380 HP | 880 Nm | +54 (16.6%) | +230 |
| Stage 2 | 463 HP | 956 Nm | +137 (42%) | +306 |
| Stage 3 | 489 HP | 1008 Nm | +163 (50%) | +358 |
| Stage 4 | 587 HP | 1203 Nm | +261 (80.1%) | +553 |
About this calibration file
The Stage 1 calibration for the 2007 Audi A8 4.2L Turbo Diesel 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 with hardware number 0281012503 and software version 377564. 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: 380 HP and 880 Nm at the crank — a gain of +54 HP (17%) and +230 Nm over the factory 326 HP / 650 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
0281012503 (Bosch) listed in the specifications. Read your ECU with any supported tool (KESS, KTAG, AutoTuner, CMD, etc.) and compare the hardware + software numbers against the ones on this page. If they match exactly, the file is a direct fit. If you're not 100% sure, upload your original read via the file-request wizard and our engineers will confirm within minutes — no cost, no obligation.Product details
This product contains a calibrated Stage1 tuning file for Audi A8 4.2 TDI CR 2007 Turbo-Diesel 239.8KW with Bosch 0281012503 and software ID 4E1907409 (Bosch software number 377564 ( 1037377564 )). The base stock vehicle for this calibration has a factory output of around 239.8 kW (~326 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 0281012503, 4E1907409, 377564 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
7245CFC4 0F15C38E A2328EB0 6CE579F8 46B29B69 CBC41FC8 5F492D3F 89EA0640