HPD Special Parts
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Improve reliability and airflow on your Pre-DPF 4JJ1 with these CNC-machined HPD EGR Cooler Delete Plates. Designed to prevent carbon build-up, support turbo upgrades, and keep your D-MAX or MU-X running cleaner for longer.
HPD's Pre-DPF 4JJ1 plates block off the EGR cooler circuit to reduce soot accumulation in the intake manifold. A clean, durable solution for owners chasing better reliability and reduced restriction — especially beneficial when running upgraded turbos or performance builds.
Key Benefits:
Note: For off-road / competition use. ECU EGR disable required. See legal section below.
These HPD EGR delete plates are specifically designed for Pre-DPF 4JJ1-TC engines:
💡 Important: Please confirm EGR cooler flange shape before ordering. Pre-DPF 4JJ1 (2012-2016) has different flanges compared to earlier Euro 3 or later DPF models.
Difficulty Level: Moderate — requires EGR system removal and ECU modification
Time Required: 1-2 hours
⚠️ MANDATORY: ECU EGR disable required for proper operation. Without ECU modification, you will experience fault codes and limp mode.
Two Options for ECU EGR Disable:
Consult a qualified diesel tuner for proper ECU EGR disable implementation.
For off-road / competition use only. Removing emissions equipment is generally illegal for road-registered vehicles. This product is intended for off-road, racing, and competition use where emissions compliance is not required. Check your local regulations before purchase or installation.
Q: Will these fit my 2015 MU-X?
A: Yes — suits all June 2012–2016 Pre-DPF MU-X 4JJ1 models. Please confirm your EGR cooler flange shape matches before ordering.
Q: Will these fit my 2017+ D-MAX?
A: No — 2017+ models with DPF have different EGR configurations. These plates are specifically for 2012-2016 Pre-DPF 4JJ1 engines only.
Q: Do I need a tune after installation?
A: Yes — you'll need an ECU EGR disable or an EGR delete cable to prevent fault codes and limp mode. The ECU expects the EGR to function, so it must be disabled in the tune.
Q: Can I use EGR delete cables instead of a tune?
A: Yes — plug-and-play EGR delete cables are an alternative to full ECU remapping. They trick the ECU into thinking the EGR is functioning normally. Consult with your installer or tuner for the best solution for your setup.
Q: Is this legal for road use?
A: No — this product is strictly for off-road and competition use only. Removing emissions equipment is generally illegal for road-registered vehicles.
Q: Does this improve performance?
A: The primary benefit is preventing carbon build-up and maintaining clean airflow over time. It doesn't directly add power, but it prevents restriction from soot accumulation, helping your engine breathe more consistently. Particularly beneficial for turbo upgrades.
Q: Are these plates anodised?
A: Yes — they're CNC-machined from alloy and anodised for durability, corrosion resistance, and professional appearance.
Q: What's the flange shape difference?
A: Different 4JJ1 model years have different EGR cooler flange shapes. Pre-DPF (2012-2016) has specific flanges compared to earlier Euro 3 or later DPF models. It's important to verify your specific flange shape before ordering.
Q: Can I install this myself?
A: If you're mechanically inclined and have ECU tuning access, yes. However, most people use a professional workshop for installation and ECU EGR disable to ensure proper setup.
Q: Will this affect my warranty?
A: Installing EGR delete plates and modifying the ECU will likely void warranty coverage for emissions-related components and potentially other engine components. Check your warranty terms.
HPD Pre-DPF 4JJ1 delete plates. CNC-machined quality. Prevents carbon build-up. ECU disable required.
