The module allows you to configure the control systems of Toyota and Lexus cars with 4.0, 4.3, 4.6, and 4.7-liter petrol engines, equipped with Denso 89661-xxxxx control units and NEC 76F0038, 76F0039, 76F0040, 76F0070, 76F0085 processors.
Available for modification:
Air calculation: calculated air load based on required torque, coefficient of air mass flow pulsations
Conditions for downshifting of automatic transmission: output speed depending on throttle position in a different mode
Automatic transmission: Torque converter: output speed and throttle position used in normal mode, output speed and throttle position used in a different mode, torque converter used in a different mode, torque converter disabled in a different mode
Automatic transmission: Flexible hydrotransformer: output speed and throttle position used in different modes, output speed and throttle position used in normal mode in different modes, output speed and throttle position used in different modes, output speed and throttle position used in various modes, Toyota time curve
Automatic transmission: conditions for upshifting: output speed depending on throttle position in a different mode
Exhaust gas temperature model: calculated exhaust gas temperature, exhaust gas temperature offset for spark retardation, exhaust gas temperature offset depending on vehicle speed, maximum exhaust gas temperature for engine protection, minimum exhaust gas temperature for engine protection
Fuel enrichment: Injection timing correction coefficient depending on load, Injector idle time, Minimum injection time, Minimum injection time with malfunction retained
Idle speed: Desired idle speed in P/N, Desired idle speed in drive, Idle ignition advance in gear, Idle ignition advance in P/N
Limiters: Engine speed limit, Vehicle speed limit
Sensor scaling: Intake air temperature correction coefficient for air mass flow, Mass air flow sensor scaling
Ignition advance: Idle ignition advance difference from base, Minimum ignition advance, Base ignition advance, Ignition advance delta for efficiency, Base ignition advance efficiency, Base ignition advance with high/low octane number, Base minimum temperature correction for ignition advance
Ignition advance correction: Base coolant temperature correction for ignition advance, Ignition advance correction for VVT, Base ignition advance correction for high/low octane number
Ignition advance: knock: Coolant temperature threshold for minimum ignition advance correction, Coolant temperature threshold for retardation, Lower (upper) engine speed threshold for retardation, Maximum ignition advance retardation, Retardation recovery speed, Ignition advance retardation value, Total retardation limit
Ignition advance: minimum: Coolant temperature threshold for minimum ignition advance correction, Minimum base ignition advance, Minimum temperature correction for ignition advance
Startup: Startup time, Engine startup speed accumulator
Throttle valve: control Maximum throttle valve position in 1st gear, Maximum throttle valve position in reverse gear, Request for maximum allowable throttle valve position, Maximum throttle valve position, Throttle valve position limit in another gear, Throttle valve position limit under different load, Throttle valve position limit enabled SAP error
Throttle valve: request: Requested throttle valve position in another gear
Torque converter - General information: coolant temperature for hot mode activation (deactivation), oil temperature for hot mode activation, threshold value of oil temperature for high coolant temperature activation, threshold value of oil temperature for hot mode deactivation, oil temperature for high coolant temperature deactivation
Torque model: optimal torque, optimal torque for transmission
VVT: Exhaust camshaft position at full load, Exhaust camshaft position at low load, Exhaust camshaft position at high load, Base exhaust camshaft position, Intake camshaft position at low load, Intake camshaft position at high load, Intake camshaft position at full load, Intake base camshaft position
Warm-up: threshold value of coolant temperature for cold engine, warm-up correction for forward/reverse movement, warm-up correction for P/N
DTC Mask
Which engines does the Toyota Denso Petrol 4 BitEdit module support:
- 1URFE
- 1URFSE
- 1GRFE
- 2GRFXE
- 2UZFE
- 3UZFE, etc.
The module requires the purchase of a 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 done 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 to activate the module.
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.
