I am trying to find a diagram and part number of the center section of the exhaust system on an M roadster/coupe S54 that has the cats built into the headers.
The exhaust consists of two parallel bent pipes about 6 feet long with no cats and no O2 sensors. I connects to the headers at the front and to the rear exhaust at the back.
My ETK shows the same exhaust on an S54 as an S52, (with cats and a resonator at the back). Yet whenI looked at Brents exhaust on his S54 Coupe it had no cats on the pipe - just on the headers.
Can anyone help?
Gordon