$1,500.00
* +4% Order Processing Fee applies. No extra payment service fees.
X-TOOL 2026 – Professional Odometer Programmer and Car ECU Tool
X-TOOL is an original professional automotive programmer designed for odometer correction, car radio unlocking, crash data cleaning, and immobiliser PIN code reading. This powerful Polish-made device is intended for professional auto workshops, locksmiths, and automotive electronics specialists.
X-TOOL supports a wide range of vehicle brands and is supplied with original software and official updates.
Main Functions of X-TOOL
X-TOOL offers advanced functionality for working with vehicle electronic control units:
- Odometer restoration
- Mileage correction in engine control units (ECU)
- Reading and writing FLASH and EEPROM memory
- Reading immobiliser PIN and CS data
- Clearing Crash Data in SRS / Airbag modules
- Calculation and reading of car radio PIN codes
- VIN code editing in control units
- Tachograph data editing
- ECU and control unit cloning
- OBD and in-circuit programming support
X-TOOL Software Updates and Subscription
When purchasing X-TOOL, you receive a software update subscription valid for the current calendar year:
- Purchase in September 2025 → updates available until the end of 2025
- Purchase in January 2026 → updates available for the entire year 2026
After the year ends, software updates become paid.
Annual update price:
€500, calculated at the exchange rate on the day of payment.
X-TOOL Package Contents
The complete X-TOOL kit includes all necessary accessories for professional use:
- X-TOOL programmer with up-to-date software
- OBDII cable
- SenseLock security protection key
- FCA 12+8 SGW cable
- A1 DB25 adapter (DIP, SOP8, SSOP8, MSOP8)
- A2 SOIC8 clip adapter
- A3 in-circuit programming adapter
- A4 adapter for RNS-510
- A5 adapter
- A7 adapter
- Universal OBDII adapter
- OBDII to OBD adapter
- Mercedes 38-pin OBDII adapter
- 12V 5.0A power supply
- USB cable
Why Choose X-TOOL
- Original professional equipment
- Official software and regular updates
- Wide vehicle brand coverage
- Advanced ECU and odometer functions
- Reliable protection and stable performance
Important:
This function is available only on certain BMW engines and is NOT applicable to other vehicle brands.
The information below applies only to stock engines with factory ECU software and a standard exhaust system.
What This Parameter Actually Represents
This is NOT a direct measurement of fuel octane and is NOT a direct octane reading calculated by the ECU.
The value is an adaptation factor ranging from 0 to 1, where:
- 0 = no correction
- 1 = maximum correction
According to BMW’s internal definition:
Faktor adaptierte Kraftstoffqualität (0 = ROZ98 / 1.0 = ROZ91)
- 0 corresponds to 98 ROZ
- 1.0 corresponds to 91 ROZ
ROZ is the German equivalent of RON (Research Octane Number).
The device converts this multiplier into a more intuitive octane value for user convenience.
⚠️ The device does not measure anything itself.
It only displays the data provided by the engine control unit (ECU).
How the ECU Evaluates Fuel Quality
Each ECU has different calibration sensitivity:
- Sensitivity to the adaptation factor
- Sensitivity of the knock control system
Fuel quality is evaluated subjectively by the ECU, primarily based on:
- Knock ignition timing corrections
- Overall engine noise levels
BMW G-Series & LCI F-Series (B-Engines)
B38 / N63 / S63 / N74
These engines are highly sensitive to octane adaptation.
- During warm-up and cruising, the displayed octane may frequently drop to 95 or lower.
- This does NOT automatically indicate poor fuel quality.
- Under load, the value should increase.
⚠️ If the value continues to decrease under load, this may indicate a problem.
B46 / B48 / B58
These engines have low sensitivity.
- During cruising, octane will typically display maximum values even with mediocre fuel.
- Under load, the value will decrease if fuel quality is truly poor.
S58
Octane correction is virtually inactive.
- It will typically always show 98.
- If it drops below 98, fuel quality is genuinely very poor.
BMW F-Series (Pre-LCI) with N/S Engines
Most pre-LCI F-series ECUs do not calculate octane adaptation.
Do not expect this parameter to function.
S55
- Octane parameter not used by the system
- Display not supported
- However, display of the last 5 refueling quality events is supported
S63
- Octane parameter not used
- Display not supported
- Refueling quality display not supported
BMW E-Series
Octane parameter not available. Display not supported.
Important Notes About Tuned Vehicles
With modified hardware or custom tuning, behavior may vary significantly. Always consult your tuner regarding expected operation.
Key principles:
- If octane drops under load, it means fuel quality is worse than expected under those conditions.
- This does NOT automatically mean the fuel itself is bad.
Examples:
- If a tuner increases ignition timing and boost pressure, even good fuel may cause knock corrections, and the ECU may interpret it as poor fuel.
- Thin-walled or poorly mounted exhaust systems may create parasitic noise, which the ECU may interpret as engine knock, causing negative correction.
- Conversely, if knock sensitivity is reduced or octane correction is disabled in tuning, readings may appear ideal while actual engine safety is compromised.
