Stage 1
Stage 1 · Petrol · 318i 1800 8v 114hp
BMW E36 318i Stage 1 file Bosch HW 0261200520 · SW 357066
BMW E36 318i Petrol 88.3 kW (120 HP) Stage 11995, Petrol, 88.3 kW (120 hp)
114 → 125 HP +11 HP +17 Nm 10% more power
Calibrated ECU file for 0261200520 (SW 357066). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 318i 1800 8v 114hp, M43B18KAT, Petrol. Engine #9441 in our gains database.
- Power
- 125 HP+11 HP from 114
- Torque
- 176 Nm+17 Nm from 159
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 0261200520 and software 357066.
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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 | BMW |
|---|---|
| Vehicle model | E36 318i |
| Model year | 1995 |
| Fuel / Induction | Petrol |
| Factory power | 88.3 kW (120 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0261200520 |
| ECU software | 357066 |
| Calibration stage | Stage 1 |
| OEM engine code | M43B18KAT |
| 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 | 114 HP | 159 Nm | — | — |
| Stage 1 | 125 HP | 176 Nm | +11 (9.6%) | +17 |
| Stage 2 | 133 HP | 185 Nm | +19 (16.7%) | +26 |
| Stage 3 | 188 HP | 246 Nm | +74 (64.9%) | +87 |
| Stage 4 | 222 HP | 294 Nm | +108 (94.7%) | +135 |
About this calibration file
The Stage 1 calibration for the 1995 BMW E36 318i 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 0261200520 and software version 357066. 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: 125 HP and 176 Nm at the crank — a gain of +11 HP (10%) and +17 Nm over the factory 114 HP / 159 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
0261200520 (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 BMW E36 318i 1995 Benzin 88.3KW with Bosch 0261200520 (Bosch software number 357066 ( 1037357066 )). 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 0261200520, 357066 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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