Stage 3
Stage 3 · Petrol · 135i 306hp
BMW E81-E87 135i Stage 3 file Siemens
BMW E81-E87 135i Turbo Petrol 225.1 kW (306 HP) Stage 32008, Turbo petrol, 225.1 kW (306 hp)
306 → 450 HP +144 HP +200 Nm 47% more power
Calibrated ECU file . Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 135i 306hp, N54B30, 3L, Petrol. Engine #770 in our gains database.
- Power
- 450 HP+144 HP from 306
- Torque
- 600 Nm+200 Nm from 400
- 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 07611790.
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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 3, Petrol.
Hardware
- Hybrid or larger turbocharger
- Upgraded high-pressure fuel pump and / or injectors
- Front-mount intercooler upgrade
- Sport / decat downpipe + free-flow exhaust
- High-flow air intake
- Uprated clutch (manual gearbox)
Software / calibration
- Custom map dialled to the installed turbo, injector and intercooler spec
- Boost, fuelling, ignition / injection timing rebuilt around the new hardware
- All safety limits (knock, EGT, lambda, rail) re-tuned to match
- Drivability and torque-by-gear shaped to match the hardware
Stage 3 is hardware-matched. Send your turbo / injector / intercooler / clutch spec at checkout so the file is calibrated to YOUR build: typical projection above is a guide, final dyno depends on installed hardware.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | BMW |
|---|---|
| Vehicle model | E81 E87 135i |
| Model year | 2008 |
| Fuel / Induction | Petrol |
| Factory power | 225.1 kW (306 HP) |
| ECU manufacturer | Siemens |
| ECU hardware | 07611790 |
| ECU software | 07611358 |
| Calibration stage | Stage 3 |
| Cylinder capacity | 2979 CC |
| Compression ratio | 10,2 : 1 |
| Bore × Stroke | 84,0 X 89,6 mm |
| OEM engine code | N54B30 |
| 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 | 306 HP | 400 Nm | — | — |
| Stage 1 | 370 HP | 500 Nm | +64 (20.9%) | +100 |
| Stage 2 | 390 HP | 520 Nm | +84 (27.5%) | +120 |
| Stage 3 | 450 HP | 600 Nm | +144 (47.1%) | +200 |
| Stage 4 | 597 HP | 740 Nm | +291 (95.1%) | +340 |
About this calibration file
The Stage 3 calibration for the 2008 BMW E81 E87 135i Petrol targets a hardware-upgraded setup — hybrid or larger turbocharger, upgraded injectors, high-flow fuelling and in most cases a full exhaust. Maps are redrawn for the new airflow envelope with re-scaled MAF/MAP, torque limiters, smoke limiters and boost PID re-tuned.
This file matches a Siemens ECU with hardware number 07611790 and software version 07611358. 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: 450 HP and 600 Nm at the crank — a gain of +144 HP (47%) and +200 Nm over the factory 306 HP / 400 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
07611790 (Siemens) 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 Stage3 tuning file for BMW E81-E87 135i 2008 Turbo-Benzin 225.1KW with Siemens 07611790 and software ID 0044CC0IJC0SIFN1S. The base stock vehicle for this calibration has a factory output of around 225.1 kW (~306 HP). This high-stage file targets heavily modified setups (bigger turbo, injectors etc.) and should be used by experienced tuners only.
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 07611790, 0044CC0IJC0SIFN1S. Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
798554E3 316FC0DE 174DD90C 225479D5 131EEA27 9941D5C1 39189B91 AA28606C