[james4321]

Hey Guys,

Few days ago I have installed DP. So my 335i is now without catalyst.
Today was good weatherand I was driving with opened windows. I could smell bad smell from my exhaust. No smoke, no issues, just bad smell. I can’t smell this in the cabin when windows are closed. Only outside the car or with opened Windows.
Just wondering if it’s normal?

[Gen13 F36]

[james4321]

Okay. That was maybe stupid question lol.
I was just curious if this should smell that bad.
😁

[GeneHackmanCrisis]

Originally Posted by james4321

Okay. That was maybe stupid question lol.
I was just curious if this should smell that bad.
😁

Well a catless DP does not a catalytic converter(s) to absorb the spent and gaseous exhaust coming out of your turbo. Usually you would smell it at a stop light with windows open though, usually.....You may want to have connection where down pipe fits onto turbo checked to make sure there is no leaks

[Wires]

What do you mean by "bad smell"? It's going to smell like an "old beater" or a "lawn mower" without cats installed. That is just the way it is.

I have high flow catted DP, and there is a bit of smell at a stop light if the wind comes from behind me. Catless would be substantially more.

[davidr3]

smells like shit, u get used to it rather quickly though.