Quote:
Originally Posted by oil pan 4
The OEMs may not have to inject as much fuel straight into the DPF
DPF is an illusion because it consumes fuel to make less soot and the soot it does make is smaller and more hazardous.
Plus, I thought the boogy man was CO2 not soot?
Also if "it doesn't use much fuel" then why will activate regen not start if a vehicle has less than 1/4 tank of fuel?
If it "doesn't use that much fuel" why on newer trucks where people are deleting the DPF people are seeing 10% to 20% fuel economy improvements?
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Pollution doesn't just have one "boogy man". PM is bad for urban areas. CO2 is bad for the planet as a whole. One is a local pollution issue and the other is a global issue. Both need to be addressed and sometimes there are tradeoffs.
People that rip out their emission systems are doing more than just deleting the DPF. They are also doing other illegal tuning. There are plenty of things that you can do to improve fuel economy that also increase emission. OEMs look for a balance between performance, fuel economy, and emissions. People doing illegal tunes don't worry about emissions.