2003-2008 Mazda RX-8 (Series 1) ECU Tuning Software and Ready to Flash Tunes

Engine: 1.3l RENESIS

All regions supported, including USDM, EUDM, JDM and AUDM.
Manual and automatic transmissions supported.

VersaTuner is tuning software for Mazda vehicles. It is a Windows application that allows reflashing/remapping (chip tuning) of Series 1 Mazda RX-8 engine ECUs, data logging, tune editing and diagnostics.

Unlike other apps that target only professional tuners, VersaTuner makes Series 1 Mazda RX-8 1.3l RENESIS tuning accessible to everyone. Included dyno-tested prebuilt tunes allow adding horsepower or increasing fuel economy with just a few clicks. More experienced users can use the Tune Editor to get access to dozens of adjustable engine tables, maps and parameters. Professional tuners can use VersaTuner Professional to tune multiple vehicles and build locked and encrypted tunes that protect their Mazda tuning know-how.

VersaTuner can be ordered globally and can be downloaded immediately after purchasing. All you need is a Windows laptop or tablet, a compatible hardware interface (cable) to connect your computer to the car and you can start tuning your Series 1 Mazda RX-8 today.

Series 1 Mazda RX-8 Tuning Made Easy

VersaTuner has been carefully designed to be easy to understand for first time users and at the same time allows experienced tuners to work efficiently. All features are accessible from one Windows app with a sleek and modern user interface. Guides and wizards lead you through the important processes. The UI is optimized both for touch-based use on tablets as well as laptops and desktop PCs.

Safe and Reliable

VersaTuner is a true reflashing (remapping/chip tuning) solution for the Series 1 Mazda RX-8, not a "piggyback" controller. No wires need to be spliced and all built-in safety features of the ECU are retained. It uses the same flashing methods that are used by dealerships when updating your ECU. Built in recovery feature can flash the ECU even in the unlikely event of power failure. Your stock calibration is backed up, so you can go back to stock at any time.

Online Tune Database

A growing selection of prebuilt Series 1 Mazda RX-8 tunes is available right from the app. If you have a stock or mildly modified vehicle, flash a suitable tune with a couple of clicks and enjoy. All our tunes were developed on real vehicles and their performance gains were measured on a chassis dyno. Our tunes can also be downloaded and edited and serve as a great starting point for custom or high power tunes. With our prebuilt tunes, Series 1 Mazda RX-8 tuning has never been easier!

Tune Editor

VersaTuner includes an advanced tune editor allowing you to edit a multitude of tables, maps and constants and customize existing or create custom tunes for your Series 1 Mazda RX-8. It comes with a ton of productivity features, such as tune comparison, visualization, interpolation and automated translation of descriptions to 110+ languages.

Dashboard & Log Viewer

Virtual dashboard allows you to view and record all the vital engine parameters simultaneously. Analyze recorded logs later using a graphical log viewer or export them to Excel or Virtual Dyno.


Read and clear DTCs from multiple modules, not just your engine ECU. A vast number of standard and Mazda-specific DTCs is supported.

Features & Extras

More Power, Faster Acceleration

VersaTuner allows you to safely and easily increase the horsepower and torque of your engine. That results in faster launches and better 0-60/0-100 times.

After driving a tuned car you will never want to go back to stock again!*

* going back to stock only takes a couple of minutes with VersaTuner, when needed

Full Potential of Modifications

Have you fitted an uprated intake or intercooler? A bigger turbo and exhaust?

On modern cars, upgrading parts alone will not have a significant effect unless accompanied by changes in ECU tuning. VersaTuner allows you to realize the full potential of your mods. Update the tune easily as you add new parts in the future.

Launch Control & No Lift Shifting

Perfect launches have never been easier. VersaTuner limits the launch RPMs so that the only thing you need to worry about is releasing the clutch at the right moment. With no lift shifting, you can go through gears without releasing the accelerator and loosing boost. All settings are fully adjustable!

* manual transmission only

Push the Limits

  • Change the speed limiter
  • Change the rev limiter
  • Adjust oil injection amount
  • Adjust cooling fan activation temperatures
  • Control the operation of auxiliary port valve (APV), variable dynamic intake (VDI) and variable fresh air duct (VFAD)
  • Make accelerator pedal more responsive
  • Use uprated sensors and MAF housings

Create Turbocharged/Supercharged Tunes

The OEM Mazda RX-8 ECU tuning tables are limited to low loads of naturally aspirated engines and are quickly maxed out when a turbo/supercharger is installed. VersaTuner allows you to edit the axis values of tuning tables, so you can precisely control the engine even at higher than stock loads or RPMs.

It can also automatically interpolate the table values so that engine operation at normal loads remains unchanged. All this allows you to create robust and accurate tunes for turbocharged or supercharged Mazda RX-8 vehicles.

No Flash Count Limit

Mazda RX-8 ECU has a built in flash counter that will lock the ECU after a certain number of reflashes.

Unlike some other tuning tools, VersaTuner can reflash the ECU without incrementing the flash counter. This lets you remap your car thousands of times* without the need to replace the ECU.

* limited by the physical durability of the ECU flash memory

Special Tunes

Anti-theft tune will prevent the car from starting and keep the intruder confused, offering you peace of mind when you need to leave the car for a long time.

Valet tune significantly reduces the power and speed of the car and is perfect for those situations when someone needs to borrow your precious vehicle.

Available Series 1 Mazda RX-8 (1.3l RENESIS) Tunes

This is a list of currently available free VersaTuner tunes for 2003-2008 Mazda RX-8 (Series 1) with the 1.3l RENESIS engine. All these tunes can be flashed both with VersaTuner Lite and the full version. These tunes were professionally developed on real cars and their performance was measured on a chassis dyno. New tunes are regularly added based on demand. If you can't find a suitable tune, you can contact a professional tuner or an e-tuner working with VersaTuner. You can also create a custom tune yourself with the full version of VersaTuner, using any of these tunes as a starting point.

91US/95EU Octane tune for 6 port RX-8 with Racing Beat REVi intake and full Racing Beat exhaust and D585 style coils. Modified AFRs, dwell, and VDI settings provide horsepower and torque gains across the entire power band. 9700 rev limit. Slightly increased metering oil pump output for increased longevity.

93US/98EU Octane tune for 6 port RX-8 with Racing Beat REVi intake. Modified AFRs and VDI settings provide horsepower and torque gains across the entire power band. Slightly increased metering oil pump output for increased longevity.

91US/95EU Octane tune for 100% stock 6 port RX-8. Modified AFRs and VDI settings provide horsepower and torque gains across the entire power band. Slightly increased metering oil pump output for increased longevity.

91US/95EU Octane tune for 6 port RX-8 with Racing Beat REVi intake and TurboXS catless exhaust. Modified AFRs and VDI settings provide horsepower and torque gains across the entire power band. Slightly increased metering oil pump output for increased longevity.

6-port (high power) engine only. Catback exhaust, High Flow Catted mid-pipe, and KN panel filter AFR changes, VDI opening moved to 7700, APV opening moved to 6400, raised load limits, +1.5* timing at high load/rpm.

Reduced power output. 6500 RPM rev limiter. 75 MPH / 120 km/h speed limiter.

Increased fuel economy. Slightly increased timing and leaner AFRs at cruise. Remapped Accelerator Pedal.

Can't find the right tune? Get an E-Tune.

Editable Tables and Constants

Full version of VersaTuner includes a tune editor that allows you to change the aspects of your Mazda ECU operation related to power delivery and fuel efficiency. Tuning your Series 1 Mazda RX-8 ECU is done by changing the tables and constants that the ECU uses internally to calculate load targeting, fueling, injection, ignition, interpret sensor values, etc.

A list of all currently available tables and constants (also known as maps) for tuning the Series 1 Mazda RX-8 ECU is provided below. As we continue to analyze the ECU logic and develop new tunes, we may make new maps available.

NOTE: The exact list of tables available for your car may vary depending on the ECU manufacturer and software version.

  • Closed Loop Max Load 1 (2D)
  • Closed Loop Max Load 2 (2D)
  • Closed Loop Max Load 3 (2D)
  • Closed Loop Max RPM (1D)
  • Closed Loop Max Throttle (2D)
  • Load Limit Unk (2D)
  • Maximum Operating Load (2D)
  • Rev Limit Normal (1D)
  • Rev Limit Warmup (1D)
  • Rev Limit Warmup Hysteresis (1D)
  • Rev Limit Warmup Temperature (1D)
  • Speed Limiter 1 (1D)
  • Speed Limiter 2 (1D)
  • Speed Limiter 3 (1D)
  • Speed Limiter 4 (1D)
  • Primary Fan Temperature 1 (1D)
  • Primary Fan Temperature 2 (1D)
  • Secondary Fan Temperature (1D)
  • Secondary Fan Vehicle Speed (1D)
  • Acceleration Enrichment - 1 (3D)
  • Acceleration Enrichment - 2 (3D)
  • Acceleration Enrichment - 3 (3D)
  • Air Fuel Ratio - 1 (3D)
  • Air Fuel Ratio - 2 (3D)
  • Air Fuel Ratio - 3 (3D)
  • Air Fuel Ratio Base (1D)
  • Closed Loop Air Fuel Additive 1 (3D)
  • Cranking Injection Pulsewidth (2D)
  • Decel Fuel Cut (2D)
  • Injector Latency 1 (3D)
  • Injector Latency 2 (3D)
  • Injector Scaling 1 (1D)
  • Injector Scaling 2 (1D)
  • Injector Scaling 3 (1D)
  • Lambda limit - ECT (2D)
  • Idle 1 (2D)
  • Idle 2 (2D)
  • Idle 3 (2D)
  • Idle 4 (2D)
  • Idle 6 (2D)
  • Idle 7 (2D)
  • Idle Leading Timing (2D)
  • Idle Leading Timing Correction (3D)
  • Idle Leading Timing Correction Multiplier (2D)
  • Idle Leading Timing RPM Correction (2D)
  • Idle Trailing Timing (2D)
  • Idle Trailing Timing Correction (3D)
  • Idle Trailing Timing Correction Multiplier (2D)
  • Idle Trailing Timing RPM Correction (2D)
  • Ignition Dwell (3D)
  • Knock Retard Decrement 1 (1D)
  • Knock Retard Decrement 2 (1D)
  • Knock Retard Increment 1 (1D)
  • Knock Retard Increment 2 (1D)
  • Knock Retard Max (2D)
  • Knock Retard Max RPM (1D)
  • Knock Retard Min Coolant Temperature (1D)
  • Knock Retard Min Load 1 (1D)
  • Knock Retard Min Load 2 (1D)
  • Knock Retard Unk 1 (2D)
  • Knock Retard Unk 2 (2D)
  • Leading Timing 1 (3D)
  • Leading Timing 2 (3D)
  • Leading Timing 3 (3D)
  • Timing Unk (3D)
  • Trailing Timing 1 (3D)
  • Trailing Timing 2 (3D)
  • Trailing Timing 3 (3D)
  • Auxiliary Port Valve (APV) 1 (1D)
  • Auxiliary Port Valve (APV) 2 (1D)
  • Secondary Shutter Valve (SSV) (2D)
  • Variable Dynamic Intake (VDI) (1D)
  • Variable Fresh Air Duct (VFAD) (1D)
  • Calculated Engine Torque (3D)
  • Desired Engine Torque (3D)
  • Load Calculation Baro Adjustment (2D)
  • Load Calculation IAT Adjustment (2D)
  • Volumetric Efficiency (3D)
  • Oil Injection - Load (3D)
  • Oil Injection - Throttle (3D)
  • ECT Sensor Calibration (2D)
  • IAT Sensor Calibration (2D)
  • Knock Sensor Calibration (2D)
  • MAF Sensor Calibration (2D)
  • Relative Throttle Plate Position (3D)
  • Throttle Duty A (3D)
  • Throttle Duty B (3D)
  • Throttle Duty C (3D)
  • Throttle Duty D (3D)

Logging Parameters

When you need to analyze how your Mazda performs before or after ECU tuning, you will drive the car and record the values of different parameters. All editions of VersaTuner (even Free!) include important Mazda-specific logging parameters that are available to official Mazda service centers and are not usually included in cheap universal logging devices or apps.

Here is a list of all currently available data logging parameters (also known as PIDs) for your Series 1 Mazda RX-8.

  • Auxiliary port valve status
  • Intake air shutter valve status VFAD? BETA
  • Port air bypass control solenoid valve mode on/off BETA
  • Secondary shutter valve status BETA
  • Variable dynamic intake status
  • Actual equivalence/air to fuel ratio
  • Desired equivalence/air to fuel ratio
  • Fuel injection pulse width
  • Fuel injection pulse width (Percent) BETA
  • Fuel system status
  • Long term fuel trim
  • Short term fuel trim (primary sensor)
  • Short term fuel trim (secondary sensor)
  • Absolute load
  • Accelerator pedal position
  • Barometric pressure
  • Catalyst temperature
  • Clutch pedal position
  • Control module voltage
  • Desired engine RPM
  • Desired throttle position
  • Engine coolant temperature
  • Engine RPM
  • Intake air temperature
  • Mass air flow
  • Mass airflow sensor voltage
  • Neutral gear status
  • Relative throttle position
  • Vehicle speed
  • Ignition timing advance - leading
  • Ignition timing advance - trailing
  • Knock retard
  • Metering oil pump position
  • Metering oil pump switch
  • Actual throttle angle
  • Desired throttle angle
  • Idle air control

Dyno Graphs

Car tested: 2004 Mazda RX-8 Series I 1.3l 6-port
Car modifications: None
Dyno type: Mustang chassis dyno
Power measured: Wheel power
Fuel type: Pump gas, octane rating 91 (RON+MON)/2, equivalent to 95 RON
Reference tune: Factory tune
Target tunes: 6-port: 91US/95EU Octane Stage 1 Stock RX-8

Would you like to try VersaTuner tuning software yourself?

Download the demo version based on full version features available for Mazdaspeed6/Mazda 6 MPS.

The demo does not connect to the car, it only lets you evaluate the user experience.


VersaTuner comes in different editions. You can choose the one that works best for you:

VersaTuner FreeLogging and diagnostics for everyone

  • Virtual dashboard with model-specific parameters
  • Sound and visual alerts to keep the car running safe
  • Record unlimited data logs
  • Visual data log analyzer
  • Read and clear DTCs
  • Works with all supported vehicles

VersaTuner Lite Reflash your car without breaking the bank

  • Includes all features of VersaTuner Free
  • Free online tune database
  • Flash all available prebuilt tunes
  • Flash tunes built by our professional tuning partners
  • Enable launch control/no lift shifting*
  • Locked to one car
  • Unlimited reflashes
  • Upgrade to full version at any time**

VersaTuner Full custom tuning capability

  • Includes all features of VersaTuner Free and Lite
  • Tune editor with access to all tables and constants
  • Flash any tunes, including custom and unofficial
  • Create custom tunes from scratch
  • Edit and customize tunes from the online database
  • Locked to one car
  • Unlimited reflashes

Order Summary

Please select a product above to estimate the total cost.
Already have VersaTuner Lite and want to upgrade to the full version?

Are you a professional tuner, e-tuner or a potential reseller?

Contact us to learn more about special terms, pricing and collaboration possibilities.


VersaTuner Tuning Software for
2003-2008 Mazda RX-8 (Series 1)

Software & Hardware Requirements
  • A computer running Microsoft Windows 10 or 11
  • OBDLink SX/EX or any other J2534 PassThru compatible cable for wired flashing and data logging
  • OBDLink LX/MX/MX+ bluetooth OBD-II adapter for wireless flashing and data logging
  • Any generic ELM327 bluetooth OBD-II adapter for wireless data logging only
  • At least 400 MB of free disk space
  • Internet connection for activation and online tune database access
Unsure which vehicle interface you need? Read more here.
License type: Personal, flashing limited to one car (specific VIN)
Contact for multi-VIN licensing options.
Install on multiple computers:
Free minor updates:
Transfer license to the future owner of your car:
Transfer license to another car: (certain exceptions apply, contact us for details)
Supported hardware interfaces (wired):
  • VersaLink
  • OBDLink SX/EX
  • Any SAE J2534 PassThru compatible cable/adapter
Supported hardware interfaces (wireless):
  • OBDLink LX/MX/MX+ Bluetooth
  • Generic ELM327 OBD-II Bluetooth adapters (low speed, data logging only)
Connection method: OBD-II port on the car, USB port or Bluetooth on the computer
No ECU removal necessary:
No need to splice wires:
Flashing method: ISO/SAE standard
Time for initial installation on the car: around 30-60 minutes
Time for each subsequent reflash: around 2-4 minutes
Automatic recovery after flashing failure:
Automatic backup of stock calibration:
Possibility to go back to stock calibration:
Number of guaranteed reflashes: 100+ (depending on the ECU)
ECU control
Number of modifiable tables: 80+
Air/fuel mixture control:
Ignition timing control:
Throttle control:
Idle RPM control:
Rev limiter control:
Speed limiter control:
Sensor calibration:
Compatibility with non-US ECUs:
Launch control: , fully configurable
No lift shifting: , fully configurable
Data logging
Logging speed: 50 samples/second (on VersaLink)
Smart logging resolution management:
Measurable parameters: 30+, including Mazda-specific
Measurement units: Fully customizable
Alerts: Visual and audible, configurable thresholds
Logging duration: Only limited by disk space
Number of generic DTCs recognized: 4000+
Number of Mazda-specific DTCs recognized: 1400+
Read/clear codes from other modules: