Emission Systems & Solutions | King Country Motors

Modern vehicles are fitted with a range of emission control systems designed to reduce exhaust gases and meet NZ standards. While these systems are important, they can sometimes cause issues that affect performance, fuel economy, and reliability.

At King Country Motors, we can diagnose, service, and provide solutions for all major emission components, ensuring your vehicle runs smoothly and avoids costly breakdowns.

🚦 Diesel Particulate Filter (DPF)

The DPF traps soot and particulates from the exhaust.
Common issues:

  • DPF warning light on
  • Reduced power or limp mode
  • Excessive fuel use or frequent regeneration cycles

Our solutions:

  • Professional DPF cleaning
  • Replacement (when required)
  • ECU remapping for off-road/motorsport applications to prevent repeat issues

♻️ Exhaust Gas Recirculation (EGR)

The EGR valve recirculates exhaust gases to lower emissions, but can clog with soot over time.
Common issues:

  • Poor acceleration
  • Rough idling
  • Excess smoke or engine fault codes

Our solutions:

  • EGR cleaning and servicing
  • Software solutions/remapping to manage EGR function safely (off-road/motorsport use)

🌬️ Intake Manifold & Carbon Build-Up

Carbon deposits build up in the intake manifold and valves, reducing airflow and efficiency.
Common issues:

  • Blocked manifolds
  • Loss of power
  • Engine knocking or poor fuel economy

Our solutions:

  • Manifold decarbonising (chemical cleaning or manual clean)
  • Intake inspections during servicing
  • Preventative maintenance advice to avoid repeat build-up

💻 ECU Remapping & Correct Calibration

Because many emission issues are linked to the ECU (engine computer), proper remapping is critical. A poorly done remap can:

  • Cause fault codes to return
  • Damage other components
  • Create compliance issues later

At King Country Motors, we ensure remapping is completed correctly using professional software and tools — giving you peace of mind that your vehicle runs smoothly and reliably.

✅ Why Choose Us?

  • Experienced technicians trained in diagnostics and emission systems
  • Safe, correct remapping practices — no shortcuts that cause future problems
  • Honest advice on whether cleaning, replacement, or software solutions are best for your vehicle
  • Support for work vehicles, family cars, 4x4s, and motorsport applications

👉 If your DPF light is on, your EGR is causing issues, or your vehicle has a blocked manifold — call King Country Motors on 07 895 7127 or [contact us online].