What is Datalogging?

Welcome to the world of data-driven vehicle tuning! If you’ve recently purchased a subscription to our Penta Performance Datalogger, or are considering doing so, this page is for you. Here, we’ll dive into what datalogging is, why it’s important, and how our tool can help you unlock the full potential of your Volvo Bosch ME7 and ME9 ECU.

What is Datalogging?

Datalogging, especially within the context of vehicle tuning, is an integral part of understanding and optimizing your vehicle’s performance. Essentially, it refers to the automated process of recording a variety of vehicle performance parameters in real-time. This process is facilitated by software that interacts with your vehicle’s ECU (Engine Control Unit), capturing and recording essential data points over a given period.

There are different types of dataloggers…from OBD2 adapters and Torque Pro App combos to expensive Autel PID Loggers. The most effective type of loggers when tuning vehicles however, are Memory Loggers. These type of logging tool and software is able to read the data straight into the ECU, as the ECU is seeing it. While OBD2 loggers are fine for checking simple diagnostics, it is basically useless for tuners simply because it does not provide the correct data needed.

This is where the Penta Performance Datalogger steps in. This tool is not just any datalogger, it’s a memory logger.

With datalogging, these parameters are not just passively monitored; they are actively recorded. This means you can go back and view how these values changed over time under different driving conditions or modifications.Once captured, this data is stored in a CSV file for subsequent analysis. By examining these data sets, it’s possible to uncover patterns and correlations that might not be evident from a real-time readout. This ability to record, recall, and analyze data is what makes datalogging such a powerful tool for vehicle tuning.

In traditional vehicle tuning without datalogging, changes to performance are often based on assumptions or generic parameters. These methods leave a lot of room for guesswork and conservative estimates to prevent damage to the vehicle. However, with datalogging, tuning can be based on actual, concrete data, providing a more accurate, safe, and efficient method for vehicle tuning. It allows for personalized adjustments to the vehicle’s performance characteristics based on its specific behavior, leading to more precise tuning and ultimately better performance.

Why is Datalogging Important?

Datalogging has several key roles in the process of vehicle tuning:

  1. Performance Evaluation: Datalogging provides insights into how modifications affect vehicle performance by providing data on a wide range of parameters.
  2. Fine-Tuning: The data captured during datalogging can be used to adjust vehicle parameters for optimal performance, power, and efficiency.
  3. Data-Driven Decisions: Instead of relying on intuition or guesswork, datalogging allows for decisions to be made based on concrete, reliable data.
  4. Performance Gains: Accurate evaluation of modifications and data-driven decision making can lead to significant improvements in vehicle performance.

What can you do with Datalogging?

  1. Diagnosis: Datalogging can be invaluable for diagnosing issues with your vehicle. For example, if your vehicle is not performing as expected, you could use a datalogger to capture real-time data while the issue is occurring. By examining the recorded data, you could identify anomalies in engine speed, boost pressure, or other parameters that could point to the root cause of the issue.
  2. Measure Power and Benchmarks: Datalogging can also be used to measure the power output of your vehicle, including horsepower and torque. With software like Virtual Dyno, you can use your logged data to generate a dyno graph, providing a clear visual representation of your vehicle’s power output.
  3. Confirm Performance Gains and Losses of Parts: When you modify your vehicle, whether it’s a new exhaust system, turbocharger, or air intake, it’s important to know if those modifications are having the desired effect. Datalogging can help confirm the performance gains (or losses) of these parts. By comparing data before and after a modification, you can objectively see the impact on your vehicle’s performance parameters.
  4. Track Long-term Trends: Over time, datalogging can help you track trends in your vehicle’s performance. This can be beneficial for preventative maintenance and recognizing when certain components may need attention before a serious problem develops. For example, if you notice a gradual decrease in engine efficiency over several months, it may signal a need for engine maintenance or repair.
  5. Improve Driving Techniques: By logging parameters like pedal position, you can gain insights into your driving habits. This could help improve fuel efficiency or even your lap times if you participate in track days.

In conclusion, datalogging offers a host of potential benefits for anyone looking to optimize their vehicle’s performance. It provides the data needed to make informed decisions, whether you’re tuning your vehicle, diagnosing an issue, or simply looking to understand your driving habits better.

Datalogging Volvo Bosch ME7 and ME9 ECU with Penta Performance Datalogger

Until recently, there was limited availability of datalogging tools for Volvo Bosch ME7 and ME9 ECUs. The Penta Performance Datalogger has been developed to address this gap. It uses a J2534 pass-thru interface, providing an affordable alternative to the typically more expensive DiCE units.

The interface of the Penta Performance Datalogger is designed to be user-friendly, accommodating both enthusiasts and professionals. The software allows for easy navigation, parameter configuration, and data visualization.

It’s worth noting that Penta Performance Datalogger provides continuous access through a subscription model, which includes regular updates, improvements, and new features.

In conclusion, datalogging is an important part of vehicle tuning, providing valuable data-driven insights. If you’re using or considering using a tool like the Penta Performance Datalogger, understanding the process and benefits of datalogging can enhance your tuning activities

Our datalogger is versatile and equipped to capture a multitude of parameters, enriching your understanding of your vehicle’s performance dynamics. Below, we’ve detailed some of the key parameters you can log, although keep in mind this is not an exhaustive list as our datalogger can log additional parameters as well:

ParameterDescription
Engine SpeedSpeed of the engine’s crankshaft
Vehicle SpeedSpeed of the vehicle
Selected GearThe gear currently engaged
Pedal PositionPosition of the accelerator pedal
Throttle AngleAngle of the throttle plate
Actual Boost PressureReal-time boost pressure generated by the turbocharger or supercharger
Desired Boost PressureTarget boost pressure set by the ECU
Actual Absolute PressureReal-time absolute pressure in the intake manifold
Boost Controller DutyDuty cycle of the boost controller
I-quota PID DCIntegral part of the PID controller for the duty cycle
Actual LoadCurrent engine load
Requested LoadEngine load requested by the ECU
Engine Load MaxMaximum engine load achieved
Maximum filling without limitationMaximum air filling of the engine without any limitation
Maximum desired air chargeMaximum air charge desired by the ECU
Desired Engine TorqueTorque output desired by the ECU
Ignition Angle OutputOutput angle of the ignition
Actual Ignition AngleReal-time angle of the ignition
Coolant TemperatureTemperature of the engine coolant
Modelled EGTModelled exhaust gas temperature
Intake Air TemperatureTemperature of the air entering the intake
Mass Air FlowAmount of air flowing into the engine
Delta ignition angle from IAT Change in ignition angle based on intake air temperature
Actual Lambda ValueReal-time air-fuel ratio
Target Lambda ValueTarget air-fuel ratio set by the ECU
LAMFAW Lambda ValueAir-fuel ratio requested by the driver
BTS Lambda ValueAir-fuel ratio from EGT Protection
BTS MAP ValueMapped value for EGT Protection
STFT (Lambda)Short-term fuel trim (air-fuel ratio adjustment)
LTFT (Lambda)Long-term fuel trim (air-fuel ratio adjustment)
Fuel Injection Time FKKVSInjection time of the cylinders
Fuel pressure(absolute)Absolute fuel pressure
Requested Fuel PressureFuel pressure requested by the ECU
Fuel Pump DCDuty cycle of the fuel pump
Average Knock Retard testAverage knock retardation test result
Cyl Knock RetardKnock retardation for Individual Cylinders