For Mitsubishi 3000GT owners looking to modernize their engine management system, converting from OBD1 to OBD2 offers significant advantages, particularly when it comes to diagnostics and tuning. While the tuning landscape for the 3000GT isn’t as straightforward as some other platforms, like certain BMW models with readily available off-the-shelf tunes, there are effective methods to achieve OBD2 compatibility. This guide will walk you through the primary options for 3000gt Obd1 To Obd2 conversion, empowering you to make an informed decision for your vehicle.
If your primary goal is simply to gain enhanced data logging capabilities, the BlackStealth MUT to OBD2 CANBUS converter presents a viable solution. This device bridges the gap between your ’91-’95 3000GT’s MUT (Mitsubishi Unified Test) system and the OBD2 standard. By plugging this converter into your existing system, you can output OBD2 data, making your vehicle compatible with popular OBD2 logging applications like Torque on Android or iOS devices. Furthermore, the BlackStealth converter often includes provisions for integrating additional sensors, such as wideband oxygen sensors or boost gauges, expanding your data acquisition possibilities. With this setup, however, engine tuning remains reliant on piggyback systems, although these can still unlock considerable performance gains.
For those seeking both advanced logging and more comprehensive tuning capabilities, swapping to an OBD2-native ECU is the preferred route. Here, two main paths emerge: utilizing a Chrome ECU or performing a ’99 ECU swap.
The Chrome ECU, available from vendors specializing in 3000GT performance parts, offers a plug-and-play OBD2 conversion. Designed specifically for the 3000GT, the Chrome ECU simplifies the conversion process, providing immediate OBD2 logging and tuning functionality. These ECUs are typically pre-configured for your specific vehicle, ensuring a seamless installation. While potentially a more significant upfront investment, the Chrome ECU eliminates the complexities of wiring modifications.
Alternatively, a more budget-conscious approach involves retrofitting a ’99 3000GT ECU. This method requires creating or sourcing a custom wiring harness to adapt the ’99 ECU to your older 3000GT. While potentially more cost-effective in terms of parts acquisition, the ’99 ECU swap necessitates a greater degree of technical expertise and labor. You’ll need to be comfortable with automotive wiring and potentially wait to find suitable deals on the necessary components. Regardless of whether you choose the Chrome ECU or the ’99 ECU swap, both options empower you with the versatility of the Chrome ROM, a popular and powerful engine management software for the 3000GT platform. Chrome unlocks a wide array of advanced tuning features beyond basic piggyback control, including functionalities like launch control, ECU-managed boost control, support for larger fuel injectors (essential for E85 fuel), and leveraging the built-in safety parameters of the stock ECU.
Regardless of your chosen OBD2 conversion method, effective logging remains crucial for monitoring engine health and performance, especially when tuning. Tools like EvoScan for PC or the aforementioned BlackStealth converter are essential for capturing vital engine data. Furthermore, for tuning the Chrome ROM, you’ll need a laptop PC and an Openport 2.0 cable, along with ECUflash software. Unless you opt for professional dyno or street tuning services, you should anticipate undertaking the tuning process yourself. While the learning curve for ECU tuning can be initially steep, particularly for those new to engine management systems, abundant resources are readily available. Comprehensive guides, such as those found on dedicated 3000GT community sites like 3SGTO (created by the developers of Chrome ROM), provide invaluable step-by-step instructions. Furthermore, the broader Mitsubishi Evo tuning community offers a wealth of relevant information and shared knowledge, and resources like Merlin’s Flash Guide can prove highly beneficial in navigating the intricacies of ECU tuning.
In conclusion, upgrading your 3000GT from OBD1 to OBD2 offers tangible benefits for both diagnostics and engine tuning. Whether you prioritize straightforward logging with a converter or seek comprehensive control with an ECU swap, understanding your options is the first step towards modernizing your 3000GT’s engine management system and unlocking its full potential.
