Introduction
Nissan and Infiniti's latest venture into sports luxury vehicles has resulted in the release of the Nissan VR30DDTT powertrain, inspired by the VR38tt found in the R35. These vehicles sport some of the lastest features developed and come in two different configurations.
Already an award winning engine, the VR30 offers seamless power delivery, the latest in direct injection technology and a range of special equipment in order to easily monitor, maintain, and increase the power and torque delivery.
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maps denoted with a RaceRom logo are tables from the RaceRom software and require the addition of that software. |
Engine Variants
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Standard Output Engine
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Shared Features
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High Output Engine
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Table of Contents
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Supplemental Info
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Summary of Software
The software to cover the VR30DDTT engine has been introduced to allow reprogramming of the factory ECU in order to tune the necessary components of the calibration in order to allow for modifications and increases in power. This is not a standalone repalcement ECU so you shouldn't run into the associated issues or disadvantages of setting up a purpose-built ECU and control system from scratch.
The software allows easy control over most factory parameters including:
- Boost Targets and wastegate control
- Target AFR
- Ignition Timing
- Fuel Delivery including fuel pump calibration (using the same style pump as OEM)
- Airflow Measurement and fuel compensation
It also allows the addition of extra features to improve the speed and quality of the tune. These are features such as
- Safeguards for temperatures and airflow that the factory calibration does not include
- Valet Modes
- EcuTek ECU Connect compatibility and adjustment
- Map switching for fuel and ignition timing
As the product progresses and development occurs, new features and improved definitions will be added.
Block Programming
Method of Operation
Block Programming (BP) will be enabled after a RaceRom patch is installed on an ECM. This means the first time you program with a BP/RaceRom equipped ROM the ECU needs to use the slow OEM programming sequence and therefore programming time will not change. On subsequent programming operations, BP will be used. The minimum programming time is approximately 20 seconds and BP will always reprogram the start and end block. More changes will require more blocks to be reprogrammed taking additional time. DTC clearing and power-off sequences still need to be followed after programming.
Failed Flash Recovery
Block Programming (BP) will be enabled after a RaceRom patch is installed on an ECM. This means the first time you program with a BP/RaceRom equipped ROM the ECU needs to use the slow OEM programming sequence and therefore programming time will not change. On subsequent programming operations, BP will be used. The minimum programming time is approximately 20 seconds and BP will always reprogram the start and end block. More changes will require more blocks to be reprogrammed taking additional time. DTC clearing and power-off sequences still need to be followed after programming.
- Close the ProECU Programming Window
- Disconnect the battery for at least 15 seconds to stop the programming code continuing to run in RAM
- Manually select the correct ECM programming window for the car. This is a critical step as ProECU will not be able to auto-detect a partially programmed ECM
- Select the correct ROM
- Program
Tuning Guide
Boost Control
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For more in-depth information, check out VR30DDTT Boost Control |
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Map List |
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Live Data Parameters
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Limiters
The VR30DDTT has many safety limiters. Raising the limiters without complete understanding may cause issues or damage to the vehicle's engine. When attempting to generate more power, some limiters may need to be increased or decreased.
Map List
Sensor Scaling
Sensor scaling is the category that contains all the sensor based scaling factors relevant to tuning the VR30DDTT engine. If there are sensors you wish to replace with aftermarket types use the sensor scaling maps and enter the new values of the sensors (acquired from their manufacturer).
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Live Data Parameters
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Torque
The VR30DDTT uses torque targets in order to control requested throttle airflows and power demand. Torque reduction requests are also released through these strategies. Similar to other Nissan platforms there are powertrain torque demand maps, torque output maps, limits and torque corrections.
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Live Data Parameters
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Idle Control
Idle control is done using the electronic throttle, the function uses a similar method to other Nissan products.
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Live Data Related Parameters
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Radiator Fan Control
Radiator fan speed for coolant temperature control is performed by the ECM. The fan speed and activation points can be adjusted in the calibration to cope with increased cooling demand and changed radiator airflow characteristics.
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Map List |
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Live Data Related Parameters
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Glossary of Terms
- AFM - Air Flow Meter.
- AFR - Air Fuel Ratio.
- Calculated Air Flow - The ai flow sensor voltage is not linearly related to the amount of air flow. The ECU uses a scaling map to translate the air flow sensor voltage into an air flow rate value called calculated air flow.
- ECM - Engine Control Module.
- Engine Load - The ECU calculates engine load based on calculated air flow divided by engine RPM. It is effectively how much air enters the engine on each revolution.
- FTST - Fuel Trim Short Term.
- FTLT - Fuel Trim Long Term.
- FMIC - Front Mounted Intercooler.
- MAF - Mass Air Flow (sensor).
- MAP - Manifold Absolute Pressure (Sensor) a measure of pressure where the zero point is a vacuum.
- MRP - Manifold Relative Pressure or boost pressure. A measure of pressure where the zero point is barometric pressure either at sea level or local.
- MBT - Maximum best torque or minimum best timing.
- O2 Sensor - Lambda or Oxygen Sensor. Analyzes the parts of unburnt fuel vs. oxygen content found in the exhaust stream of the engine.
- RRLC - RaceRom Launch Control.
- RRBC - RaceRom Boost Control.
- RRFF - RaceRom Feature File.
- SD - Speed Density, the amount of air movement (mass airflow) in grams is calculated via the MAP sensor rather than the MAF sensor.
- TCM - Transmission Control Module or Gearbox ECU.