3.0 TDI soot smell

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Prodigium

I equally love and hate German engineering
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Hello.
So about 6 months ago I chip tuned my b8 (CAPA). I've done all the classical things. EGR, DPF, swirl flaps delete and gutted the muffler. When I've been preparing the car I've also cleaned the intake manifold and there was some soot accumulated which I removed.
The problem I have is that if you stand behind the car when running you can smell the soot. You can also smell it if you drive behind me at a distance less than lets say 50m. What do you think might be the reason?
 
I checked your build thread, and when you gutted the DPF you also gutted the CAT, the CAT helps reduce the fumes. Its just something you have to get used to now.
 
Yeah I'm aware that it all has a purpose so it meets regulations but is there a way to hide the smell? Probably no but asking doesn't hurt. Since the exhaust fumes don't re-burn is it possible that the soot is now accumulating in DPF and exhaust pipe? I guess in order to clean that whole thing needs to be torn apart. I'm not keen to that :/
 
Yes some soot will line the exhaust, all you can do it drive it a bit harder to burn it.

To be honest my car also stinks but I’ve gotten used to it now.
 
Prodigium said:
Yeah I'm aware that it all has a purpose so it meets regulations but is there a way to hide the smell? Probably no but asking doesn't hurt. Since the exhaust fumes don't re-burn is it possible that the soot is now accumulating in DPF and exhaust pipe? I guess in order to clean that whole thing needs to be torn apart. I'm not keen to that :/
Click to expand...

You can try terraclean on it. It will only be a temporary fix though as the spot will return.


OliNix
B8.5 S4 Avant - Glacier White
 
Alternatively you can also get another gutted dpf with the cat section still in place. Its not really a restriction unless you want to go above 400 bhp.
 
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