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But when the engine is idling the exhaust gas' temperature is too low to burn out soot/PM, so it does not help the DPF. On the other hand, it may produce more PMs for the DPF to catch.
Low load (idle) -> low EGT -> more PM, less NOx
High load -> high EGT -> less PM, more NOx
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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