The exhaust emissions standards for new cars have effectively required fitment of a DPF in the exhaust of diesel cars since 2009 when the ‚Euro 5‘ standard came into force. In fact, many cars registered before 2009 will have had one fitted too in anticipation of the change in standards.
Standards aim to deliver an 80% reduction in diesel particulate (soot) emissions but as owners are finding out with great expense, the technology is not without its problems.
HOW DO THEY WORK?
The DPF looks similar to a traditional exhaust silencer, but is mounted close to the engine. Inside is a complex honeycomb ceramic structure designed to filter the exhaust gases while minimising flow reduction (which would otherwise limit performance). By forcing the exhaust gases through the walls between the channels of the DPF, the particulate matter is deposited on the walls, so reducing the amount of air pollution. Once the DPF reaches a certain level of ‘Saturation’ it performs a regeneration cycle to burn off the particulate matter inside the filter.
BENEFITS OF DPF REMOVAL – DPF DELETE
DPF Removal software will ensure that your vehicle operates without the DPF being present. Most customers also benefit by having a performance remap alongside the DPF remap which provides even better gains than just the DPF Removal itself. The benefits of DPF removal are as follows:
- No expensive DPF replacement costs.
- No more limp modes when the vehicle decides to do a forced regeneration.
- Improved MPG due to the removal of an air restriction allowing the engine to breather better.
- Improved power output of the vehicle. We have tested many vehicle’s on our dynamometer before and after DPF removal and every single one has provided a performance gain. An example of one is the Fiat 500 1.3 Multijet 75bhp which gained 8bhp and 10lbft after having DPF removal.
- After DPF removal it is possible to use bio fuels as they can no longer cause issue to the DPF filter.