sandracer799
1/2 ton status
sled_dog said:it is not a resonator, it is a Diesel Particulate Filter(DPF). It builds up with soot if it isn't cleaned out. Thats where the flames come from. IT is called "Regen mode". The PCM dumps extra fuel that is literally burned up in the exhaust to clean the regen cat out. It is only supposed to work at like 65mph and a certain RPM, but then you can see what happens when it malfunctions.
The goofy tip itself is not the DPF, The tip is to help cool the exhaust as it comes out. The DPF is farther up in the exhaust almost like a cat.




