Module for editing calibrations of Honda cars with naturally aspirated 1.5L petrol engines and Keihin control units based on the TC1782 processor.
Supported file size: 2.5MB
Available for modification:
Air calculation: Boost air efficiency high VTEC, Boost air efficiency low VTEC, Mass air flow through throttle body in additional mode, Exhaust gas pressure after catalyst, Mass air flow through throttle body directly
Camshaft control: Target cam angle high VTEC, Target cam angle low VTEC, Cam angle at WOT high VTEC, Cam angle at WOT low VTEC
EGT: EGT prediction map for air intake A/B
Fuel: MAP Fuel High VTEC in additional mode, MAP Fuel Low VTEC in additional mode
Idle control: Required idle speed, Required idle speed after startup A, Required idle speed after startup B
Injector control: Injector scaling in additional mode
Detonation limit: Ignition advance limit for high VTEC detonation, Ignition advance limit for low VTEC detonation
Detonation sensitivity: Detonation sensitivity
Limiters: Engine speed limit
Load limit: Load limit high VTEC, Load limit low VTEC
Speed limit cut: Injector cut on RPM overrun, Injector cut on speed overrun, Injector restart, RPM recovery
Sensor scaling: Lambda sensor conversion, Mass air flow sensor scaling
Ignition advance: Ignition advance dependency on EGR high VTEC, Ignition advance dependency on EGR low VTEC, Ignition advance retard for torque reduction high VTEC, Ignition advance retard for torque reduction low VTEC, Dwell time, Ignition angle
Ignition advance correction: Ignition advance correction based on intake temperature
Spark compensation: Ignition advance based on water temperature, Ignition retard based on water temperature
Target lambda: Target lambda at full load, Target lambda in closed loop, Target lambda limit for closed loop
Throttle control: Throttle position enrichment in additional mode, Throttle position linearization high VTEC, Throttle position linearization low VTEC, Throttle opening enable
Torque limit: Torque limit (check if found)
VTEC: Engine speed for VTEC engagement
DTC error mask and maximum speed editing are not available!
Module requires the purchase of BitEdit USB protection key BitEdit. The key can be purchased in our store. An unlimited number of modules can be purchased for one key.
Description updates for new software versions within the module are free.
Module activation is performed within 1 hour on business days (usually 10-15 minutes). Activation may be delayed on weekends and holidays (up to 2 hours).
ONLY the serial number of the key and email are required for module activation.
1. No Refunds or Modifications for Digital Licenses
Activated modules or licenses cannot be returned or refunded.
If an incorrect key or device number is entered by the customer, the purchase is not eligible for return.
Licenses cannot be modified, transferred, or reissued for another device under any circumstances.
2. Irreversible Order Processing
After the order status changes to “Waiting for activation”, the data has already been sent to the developer.
From this point onward, the order cannot be canceled, edited, corrected, or refunded.
3. Responsibility for Software Functionality
Our store is not responsible for the functionality, performance, or declared features of any software module.
We do not guarantee the listed functions because we are not the developer.
4. Accuracy of Product Information
Module and script descriptions are provided directly by the manufacturer.
IOBD.io is not responsible for any inaccuracies, missing details, or differences between the description and actual operation.
In disputed situations regarding functionality or listed features, the customer must contact the manufacturer.
5. Customer Responsibility for Installation
IOBD.io sells professional automotive diagnostic software and equipment.
Installation, setup, configuration, and compatibility checks must be performed by the customer.
We do not provide remote installation, programming, or setup services unless explicitly stated otherwise.
6. Required Technical Knowledge
These products are intended for users with basic technical knowledge in automotive diagnostics.
The customer is fully responsible for understanding the installation process and using the software and hardware correctly.
7. No Liability for Incorrect Usage
IOBD.IO is not responsible for issues caused by:
incorrect installation
unsupported or incompatible hardware
improper configuration
third-party interference
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.
