novae500

Bumping this. Got stinky rotten eggs way too often and threw a cel. Ordered 2 of the 3" metal spun 300 cell cats 415300, 4 band clamps and 5 ft of 409 ss tubing to connect to rest of exhaust.

sunil517

My friend has these on his SL55 and now no more smell and CEL and car went into inspection mode.
He has LT and piping to the mufflers only.
The sales person said Australia emission standards are way higher then the US and how they use this in all the high HP cars.
Also this exhauste system from the SL55 is for sale from headers to tailpipe.
Looking for even trade for a full stock system car is being traded...

Afr00t

On a side note, anyone know if the e55 stock primary cats fit the cl55? If so i'm in need for pair of primaries!

Crissus

Stock is 400 cell... Have them in your hand and try to blow through...
I somehow would not want to go below 200cell because you might loose some low end torque, that is created by having back-pressure assist with cylinder filling.
I have 100cell Magnaflows in my W124 500E... a few hundred miles and they started rattling (i assume its the cats). Maybe not good for often full load accelerations on the Autobahn