Hi Guys

So sometime ago i removed the catalytic converter from my car. I had it replaced with a silencer/muffler. Now, if i drive with the windows open i get a lot of exhaust fumes coming into the car. (never had this problem before i removed the cat). The fumes/smell is quiet bad! my eyes actually burn with the fumes.

I took it to the exhaust people, there are no leaks etc. in the exhaust system.

I don't know what to do?

Any suggestions?

PS. I drive a 2001 C180 non kompressor. The mileage is 301000kms

That's normal since you removed the cats! The cats are what reduce the exhaust/gasoline smell.

Nothing is wrong. If you want to reduce the fumes, then you have to put cats back on.

Oh snap!!

I get no fumes in the cab from a pre cat car. Something else must be wrong. There are a lot of cars on the road without cats & they do not have this problem.

Place a rag over your exhaust with the car running to hear whether there are any leaks.

Try extending the tail pipe a little to clear the rear bumper . Mine is adjustable.

Thanks Carsy... i did go to an exhaust specialist and no leaks were found.

Will go to someone different to get a second opinion

LOL! Well, guess you're not in the US.
So, what engine do you have, if not a Kompressor?
Curious since we didn't get that version here.

What did you do with the O2 sensors when you cut out the Cats?

C180 & C200 were available naturally aspirated prior to Kompressor in ROW.

Hey Glyn

The O2 sensor is still there, they just installed a 'cat block', or at least i think that is what they call it.

Hey C230...

Nope, im not in the US. I reside in South Africa.

I have the w203 C180 (M111 engine).

What is the displacement?

I think its a 1799 cc (1.8 L) it produces 95kW (129hp).

The w203 (like mine) has the M111.921 engine whereas the w202 has the M111.920 engine

Are you storing any fuel trim codes?

No nothing at all.