Quote:
Originally Posted by oil pan 4
DPF filters decrease fuel economy.
And they still create DPM in the most dangerous particle size of 1 to 2 microns.
I say if you are not in a city with a smog problem lop them off.
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There will come a time when DPFs will be of no more hindrance to performance as 3 way catalysts are to gasoline spark ignited engines.
And DPFs don't necessarily "create" small micron particles. The whole system of DPFs and high pressure fuel systems in diesels biases particulates toward the sub micron range. I think you are aware that gasoline direct injected engines also create these single digit micron particulates. They are under scrutiny and may need remediation as GDI is becoming ubiquitous.