Owners of 2002 Toyota Prado 90 series (3.4L petrol) are seeking bolt-on exhaust system upgrade options, specifically with Pacemaker extractors. They are finding limited “off-the-shelf” systems and are questioning the value of a full system vs. extractors alone. Concerns include performance gains, fuel economy, and unwanted noise. Some shops are quoting for parts that may not be accurate for the model (e.g. Catalytic converters).
Solution
- Pacemaker Extractors with Stock Exhaust: Many users recommend fitting Pacemaker extractors to the existing 2 1/4" exhaust system, including the original muffler. This reportedly improves the 2700 rpm weak point, rpm climb, and adds a subtle deeper tone. Upgrading the rest of the system might only add noise without significant performance gains.
- Custom Exhaust: Several members opted for a custom-made 2.5" exhaust system after the extractors.
- Check Muffler Valve: Inspect/service the variable pressure valve at the rear of the main muffler as it may be seized. Use penetrating fluid before attempting to loosen bolts to avoid breakage.
Parts
- Pacemaker Extractors: Considered a good upgrade (mandrel bent).
- Redback Extractors: Some users have successfully installed Redback extractors (intended for Hilux with the same engine) on their Prados. Redback part numbers vary for auto and manual transmissions.
- Factory Toyota Cat-Back System: A factory Toyota cat-back system was mentioned as a potential option.
- Mufflers: Replacing just the muffler can provide a desired sound.
- Pacemaker Full Exhaust System: Pacemaker was in the process of developing a full exhaust system (extractors to tailpipe) with a specific muffler and resonator configuration. The final design and release date were delayed due to ongoing testing. The initial design included an 18" long center muffler (11" wide, 4" deep) and a 4" or 6" round resonator at the back, with 2 1/2" piping throughout.
Notes
- Catalytic Converters: Early Australian 90 series Prados (3.4L petrol) generally do not have catalytic converters or O2 sensors as factory equipment.
- Hilux Extractors: Hilux extractors can fit a Prado with the same engine.
- Fuel Economy: One user reported an improvement in fuel economy after installing the Pacemaker full exhaust system, achieving 970km on 120 liters of fuel (12.7 L/100km).
This technical summary was auto-generated based on recovered archives. Do not rely on its factual accuracy. Refer to the original thread. Source: View Original Conversation
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