Navigating the world of car modifications, especially when it comes to older models, can bring up a lot of questions. If you’re a Dodge Stealth enthusiast, you might be wondering, Are Dodge Stealths Obd2 compatible? The answer isn’t a simple yes or no, and delving into the details will help you understand your options for diagnostics and performance tuning.
Dodge Stealths, particularly those from the early 1990s, predate the widespread adoption of OBD2 (On-Board Diagnostics II). OBD2 became mandatory in the USA for all cars manufactured from 1996 onwards. This system standardized the diagnostic interface, making it easier for mechanics and owners to read fault codes and monitor vehicle health. However, earlier models like the Dodge Stealth often used the older OBD1 or manufacturer-specific diagnostic systems.
So, what does this mean for your Dodge Stealth? Out of the factory, most Dodge Stealths are not OBD2 compatible. However, the good news is that there are solutions available if you’re looking to bring your Stealth up to modern diagnostic standards or enhance its performance tuning capabilities. Let’s explore the primary methods for achieving OBD2 functionality on a Dodge Stealth:
Exploring OBD2 Conversion for Your Dodge Stealth
For Stealth owners wanting to leverage OBD2’s benefits, several paths are available, each with its own approach and level of complexity.
1. MUT to OBD2 CANBUS Converter: A Logging Solution
If your primary goal is to log vehicle data, a MUT (Mitsubishi Unique Tool) to OBD2 CANBUS converter, like the one offered by BlackStealth, presents a straightforward option. This device acts as a translator, taking the signals from your Stealth’s MUT system and outputting them in the OBD2 format. This allows you to use standard OBD2 tools and apps, such as Torque on your smartphone, for basic logging.
This conversion is particularly useful for monitoring your engine’s performance and health. Furthermore, some converters also accommodate additional inputs for aftermarket sensors like wideband oxygen sensors or boost gauges, expanding your data logging capabilities. It’s important to note that while this provides OBD2 output for logging, tuning with this setup is typically limited to piggyback systems.
2. Chrome ECU Swap: Plug-and-Play OBD2 and Tuning
For a more comprehensive solution that encompasses both OBD2 compatibility and advanced tuning, swapping to a Chrome ECU is a popular choice. These ECUs, often available from specialized vendors like 3SX, are designed as plug-and-play replacements for your stock ECU. They come pre-configured for your car and offer native OBD2 logging and tuning capabilities.
A Chrome ECU unlocks a wider range of tuning potential compared to piggyback systems. You gain access to features like launch control, ECU-controlled boost, and support for larger injectors (essential for E85 fuel conversions). Moreover, you retain the built-in safety features of the stock ECU, which are crucial for engine reliability.
3. ’99 ECU Swap: The Retrofit Route
Another avenue, albeit more involved, is to retrofit a ’99 ECU into your Dodge Stealth. The ’99 models were among the last of the Stealth generation and came equipped with OBD2. This method necessitates creating or acquiring a custom wiring harness to adapt the ’99 ECU to your older Stealth’s wiring.
While potentially more cost-effective if you can find a good deal on a ’99 ECU and are comfortable with wiring modifications, this option demands more time and technical skill. Like the Chrome ECU, the ’99 ECU swap provides full OBD2 functionality and opens doors to advanced tuning using Chrome firmware.
Essential Tools for Tuning and Logging
Regardless of the OBD2 conversion method you choose, certain tools are indispensable for tuning and data logging:
- Logging Software: Software like EvoScan for PC is widely used for in-depth data analysis. Alternatively, the BlackStealth converter mentioned earlier often pairs with mobile apps for convenient logging.
- Tuning Cable: An Openport 2.0 cable is a standard interface used for flashing and tuning ECUs with software like ECUflash.
- Laptop PC: A laptop is necessary for running tuning software, logging data, and making adjustments to your ECU maps.
DIY Tuning: A Rewarding but Challenging Path
Unless you opt for professional dyno or street tuning, you’ll likely be embarking on the DIY tuning journey. It’s important to acknowledge that there’s a learning curve involved, especially if you’re new to ECU tuning. However, a wealth of resources is available to guide you.
Websites like 3SGTO (a sister site to this forum, as mentioned in the original text context) and resources from the Evo community offer valuable information. Merlin’s Flash Guide is another excellent resource for understanding ECU flashing and tuning principles.
Conclusion: OBD2 is Achievable for Your Dodge Stealth
While Dodge Stealths weren’t originally equipped with OBD2, achieving OBD2 compatibility is definitely within reach. Whether you prioritize basic logging, advanced tuning, or are working within a budget, there’s a solution to fit your needs. By understanding the different conversion options and the tools involved, you can confidently upgrade your Dodge Stealth to benefit from modern diagnostic and performance tuning capabilities. Good luck with your modifications!
