SPEED DENSITY TUNED
The science explained:
Think of your car's Engine Control Unit (ECU) as its brain. It's a small computer that constantly monitors sensors throughout the engine and other systems (like airflow, engine temperature, and throttle position). Based on this information, the ECU makes real-time decisions to control things like fuel injection, ignition timing, and other functions to ensure your engine runs efficiently and performs as intended. Essentially, it's the central hub that keeps everything working together in harmony.
Advanced ECU Control for Precision Tuning
At speed Density Tuned, we leverage an advanced ECU platform that provides access to previously inaccessible ECU maps. This deeper access allows us to achieve a higher level of precision in our tuning services.
Real-Time Diagnostics and Insight
Our advanced diagnostic capabilities enable us to view, chart, and log all your vehicle’s data in real-time.
We can access a multitude of parameters by reading your vehicles various control modules.
Diagnostic Trouble Codes (DTCs) - Beyond the Code
We go beyond simply reading DTCs. We understand that:
DTCs are critical for identifying issues within your vehicle’s systems.
The latest DTC in many cases can be a symptom of a previous error.
Example: A faulty starter motor causing a low voltage condition at the coil pack, which then logs a DTC pointing to a coil pack issue.

Speed Density Tuned
Freeze Frame Data - Context is Key
Freeze Frame Data provides a detailed snapshot of your vehicle’s operating conditions at the precise moment a DTC was set. This valuable context allows for more effective and accurate troubleshooting.
ECU Log Files - Verifiable Accuracy
We provide log files directly from the ECU to ensure complete transparency and the utmost accuracy in our diagnostic reports.
Our niche is to calibrate within factory tolerances of the maps as designed by the OEM manufacturers, unless otherwise requested, to ensure both performance and reliability.
Crankshaft Relearn - Our ECU calibration capabilities include specialized functions like Crankshaft Relearn, preventing costly dealership visits.
Transmission Fast Learn - This function helps recalibrate the transmission control module (TCM) after transmission work, enabling the TCM to quickly adapt to new parameters for smooth shifting and optimal performance.
Transmission Adaptation Reset - We can reset the adaptive values within the TCM, a valuable procedure after significant wear or component replacements.
ZF 6HP and 8HP Transmission Control Module (TCM) Experts
Advanced Diagnostics, Calibration, and Performance Optimization:
Specializing in VW, Audi, Range Rover, Jaguar, and Toyota vehicles.
Comprehensive TCM Diagnostics:
Accesses the Transmission Control Module for accurate fault codes, going beyond traditional OBD2 scanners.
Expert TCU Calibration:
Addresses clutch slipping and torque converter issues through TCM calibration.
Adaptive Value OEM Reset:
Restores transmission learning for optimal performance after maintenance or modifications.
Science-Based Technology:
Pinpoints DTCs (Diagnostic Trouble Codes)
Enables replacement of only necessary parts
Eliminates unnecessary Mechatronic replacements in most cases

Traditional dyno tuning often focuses on peak horsepower figures, but achieving consistent performance across the entire RPM range requires a more nuanced approach. This is where Steady-State Tuning excels.
Steady-State Tuning, this process involves meticulous data collection from the tuner's wideband O2 sensor. This data, along with log files from the vehicle's ECU, is then sent to Speed Density Tuned for analysis.
By analysing this data, we can identify discrepancies between the actual air-fuel ratios and the values calculated by the ECU. This allows us to refine the MAF scaling within the ECU's calibration, ensuring accurate air-fuel ratios across the entire RPM range.
Accurate MAF calibration is crucial for achieving optimal engine performance, fuel efficiency, and overall reliability.
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Challenge Accepted: WRX/STI.....
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Knock Control and Fine Tuning
A robust knock control strategy is vital for maintaining engine reliability and safety, especially under high-performance conditions.
This involves carefully tuning the ECU's knock detection parameters and ignition timing to prevent harmful detonation.
Fine-tuning these parameters allows us to push the limits of performance while ensuring your engine remains protected.
Our expertise in knock control calibration ensures optimal power delivery without compromising engine longevity
02
Ignition Advance Multiplier (IAM) map
The Ignition Advance Multiplier (IAM) map is fundamental to the performance and health of engines, particularly Subaru boxer engines. It dynamically adjusts ignition timing based on various engine parameters.
However, its effectiveness is deeply intertwined with the accuracy of the engine's fuelling calculations. Any deviation from precise air-fuel ratios (AFR) can negatively impact the IAM's ability to optimize ignition timing, potentially leading to suboptimal performance.
Therefore, achieving accurate fuelling is paramount for the correct and safe operation of the IAM system.
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Impact on aftermarket tuning
Capturing Real-Life Data
Histograms are a game-changer in the calibration industry.
Advanced data capturing allows for precise logging of discrepancies between actual and commanded AFRs.
Additionally, ignition timing events are also logged and analysed.
By compensating for the AFR Math Error, we can significantly reduce the risk of detonation, a critical aspect of engine health and performance.
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The Solution
Tailoring fuelling and safety parameters to real-world fuel conditions is no longer guesswork – it's a data-driven necessity for optimal engine performance and longevity. T
This intricate process is ECU and software dependent, with comprehensive data capturing being crucial.
Working in partnership with your tuner allows for in-depth analysis and optimisation of the engine's tune.
Our commitment to accuracy is reflected in our strict 6-step calibration process, guaranteeing the best possible results for your vehicle.
At Speed Density Tuned, our policy is built on unwavering honesty and transparency.
By meticulously analysing the factual data from your ECU, we gain an unvarnished understanding of your vehicle's current state and its potential.
Vehicle Report Card:
The Diagnostic Deck is Now Stacked in Your Favour!.
For automotive companies and second-hand car dealers, our unrivalled access to ECU files and live data logging is a game-changer for your business.
Understanding the intricacies of EFI tuning is no longer a risk but a strategic advantage. Whether dealing with boosted or naturally aspirated vehicles, our platform provides the crucial engine fundamentals – from air-fuel ratios and ignition timing to volumetric efficiency – directly at your fingertips.
Equip your automotive business with in-depth ECU insights, including essential VIN number associated reports and thorough sensor data analysis. This level of access mitigates risks in valuations, accelerates diagnostics, and enables optimized performance offerings, ultimately bolstering profitability and fostering stronger customer trust.
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the evolution of calibration....
Project WRX STI:
Addressing Fuelling Challenges:
While the factory ECU attempts to compensate for varying atmospheric conditions, a critical factor often overlooked is fuel quality.
Despite potentially similar barometric pressures worldwide, fuel characteristics differ significantly.
A key indicator of potential fuelling discrepancies lies in comparing the ECU's intended Air-Fuel Ratio (AFR) target with the actual AFR measured by an external wideband O2 sensor, particularly during dyno runs.
In South Africa, the prevalence of 95 octane fuel (equivalent to USA 91 octane) contrasts with premium fuels like 94 octane in the USA.
This difference underscores the necessity of precise, data-backed calibration to ensure reliable power and prevent fuelling-related problems.
Properly calibrating the fuelling and critical fail-safe tables for real-world fuel conditions is essential for optimal performance and engine longevity.
Ignoring these nuances can lead to significant fuelling issues and potential damage.
