What are DPF Back Exhaust Systems and How Do They Work?
DPF Back Exhaust Systems are aftermarket exhaust systems that replace the factory exhaust components from the diesel particulate filter (DPF) rearward. These systems often feature larger diameter pipes and less restrictive mufflers, allowing for smoother exhaust flow and reduced back pressure. This results in increased horsepower and torque output from your diesel engine.
Unlike delete kits, which remove the DPF entirely, these diesel-only systems retain the DPF, ensuring legal compliance with Australian emissions regulations. In some truck models, they also provide a more aggressive exhaust note compared to factory-installed systems.
How Can a DPF Back Exhaust Improve Your Vehicle?
Investing in a quality back exhaust system can offer several advantages for your diesel vehicle's driving experience:
- Intentionally Designed: DPF back exhausts are designed to work with your DPF, ideal for types of diesel makes and models.
- Improved Fuel Economy: The improved exhaust flow and efficiency provided by DPF back exhaust systems can lead to better fuel economy, helping you save money at the pump while enjoying enhanced performance. They are also safer for you and the environment.
- Stylish Design & Sound: It’s rare for a factory exhaust tip to match the look of a truck or SUV. Back exhaust systems usually have more stylish finishes that further complete the look of your vehicle. And for some auto enthusiasts, these systems sound noticeably sportier.
Should You Delete Your Current DPF?
If your vehicle runs on diesel, it is generally advised to not remove your diesel particulate filter. Not only can you be fined over $10,000 for driving without one, it is also a highly criminal offence.
DPF-delete builds are not considered roadworthy. On top of this, you’ll be breathing in toxic exhaust fumes daily. Unless you plan to use your vehicle for casual racing and offroading—and nothing else—it’s probably best to keep your current DPF installed.
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