Upgrading or replacing the turbocharger on your Isuzu D-Max with the 4JJ1 engine can significantly impact performance, fuel efficiency, and overall driving experience. However, choosing the right turbo isn't as simple as picking any option off the shelf. There are several factors to consider to ensure the best fit for your vehicle. In this guide, we'll break it down step by step to help you make the right choice.
Understanding Your 4JJ1 Turbo Options
Not all 4JJ1 engines use the same turbocharger. There are multiple variations depending on the model year and specific vehicle configuration. Selecting the right turbo requires identifying key details about your current setup.
Step 1: Locate Your Turbo Nameplate
The easiest way to determine which turbo you need is by checking the nameplate on your existing turbocharger. This small metal plate contains crucial information such as:
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Turbo Model
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Part Number
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OEM Number
This information will help you match your replacement turbo with your current engine setup.
Step 2: Identify the Turbo Part Number
Turbo manufacturers assign a unique part number to each turbo model. This number is the most accurate way to find a direct replacement or performance upgrade.
Step 3: Check the OEM Number
The OEM (Original Equipment Manufacturer) number is assigned by Isuzu and helps confirm the correct turbo for your engine. Cross-referencing this with your vehicle's specs ensures compatibility.
If the nameplate is missing or unreadable, refer to your vehicle’s service manual or consult a professional.
Common Turbocharger Models for the Isuzu D-Max 4JJ1
1. VIEZ Turbo - for early model D-Max 4JJ1 120 kW (2008-2012)
This is an early model, identifiable by its kilowatt output and the size of the actuator. The turbocharger on this model features a larger actuator compared to the later versions.
2. VIGM Turbo - for D-Max 4JJ1 130 kW (2012-2016)
This turbo is specifically designed for the 4JJ1 with 130 kW. It can be distinguished by its smaller actuator compared to the early model.
3. 49477-06200 for D-Max 4JJ1 (2016 and later)
As shown in the photo, this turbo features a V-band connection to the dump pipe, which sets it apart from earlier models. Additionally, the compressor housing has a different shape.
Choosing Between a Standard Replacement or Performance Upgrade
Once you've identified your current turbo, it's time to decide whether you want a standard replacement or a performance upgrade.
Standard Replacement Turbochargers
If you're looking to maintain factory performance and reliability, a standard replacement turbo is your best bet. These turbos are designed to match the original specifications of your 4JJ1 engine, ensuring a seamless fit and function.
Standard replacement turbos can be found HERE!
Performance Upgrade Turbochargers
For those looking to boost power and improve throttle response, a high-flow performance turbo is a great option. Demon Pro Parts offers upgraded turbochargers that enhance airflow and overall efficiency. Here are two common upgrade options:
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Stage 1 Turbo: A bolt-on upgrade that increases airflow while maintaining reliability. No additional modifications required.
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Stage 2 Turbo: A high-performance upgrade designed to significantly boost power, ideal for those running supporting mods such as upgraded intercoolers and tuning.
Both of which can be found HERE!
Final Tips for Selecting the Right Turbo
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Confirm Compatibility: Double-check your turbo part number before purchasing.
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Consider Your Needs: A standard turbo is best for daily driving, while a performance turbo is ideal for increased power and towing.
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Seek Expert Advice: If you're unsure, reach out to turbo specialists or a trusted mechanic to guide you in the right direction.
Conclusion
Choosing the right turbo for your Isuzu D-Max 4JJ1 doesn’t have to be complicated. By identifying your current turbo, understanding your options, and considering your driving needs, you can make an informed decision that improves your vehicle's performance and longevity. Whether you need a factory replacement or a high-performance upgrade, Demon Pro Parts has you covered.
