Stage 1
Stage 1 · Petrol · 500 - 388hp
MB GL 500 Stage 1 file Bosch HW 0261209291 · SW 387962
Mercedes-Benz GL 500 Petrol 285.4 kW (388 HP) Stage 12007, Petrol, 285.4 kW (388 hp)
388 → 405 HP +17 HP +40 Nm 4% more power
Calibrated ECU file for 0261209291 (SW 387962). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 500 - 388hp, M273.963, 5.5L, Petrol. Engine #4773 in our gains database.
- Power
- 405 HP+17 HP from 388
- Torque
- 570 Nm+40 Nm from 530
- 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 0261209291 and software 387962.
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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 | Mercedes-Benz |
|---|---|
| Vehicle model | Gl 500 |
| Model year | 2007 |
| Fuel / Induction | Petrol |
| Factory power | 285.4 kW (388 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0261209291 |
| ECU software | 387962 |
| Calibration stage | Stage 1 |
| Cylinder capacity | 5461 CC |
| Compression ratio | 10,7 : 1 |
| Bore × Stroke | 98,0 X 90,5 mm |
| OEM engine code | M273.963 |
| 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 | 388 HP | 530 Nm | — | — |
| Stage 1 | 405 HP | 570 Nm | +17 (4.4%) | +40 |
| Stage 2 | 429 HP | 599 Nm | +41 (10.6%) | +69 |
| Stage 3 | 640 HP | 822 Nm | +252 (64.9%) | +292 |
| Stage 4 | 757 HP | 981 Nm | +369 (95.1%) | +451 |
About this calibration file
The Stage 1 calibration for the 2007 Mercedes-Benz Gl 500 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 with hardware number 0261209291 and software version 387962. 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: 405 HP and 570 Nm at the crank — a gain of +17 HP (4%) and +40 Nm over the factory 388 HP / 530 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
0261209291 (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 MB GL 500 2007 Benzin 285.4KW with Bosch 0261209291 (Bosch software number 387962 ( 1037387962 )). The base stock vehicle for this calibration has a factory output of around 285.4 kW (~388 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 0261209291, 387962 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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