Chris... Thanks for the info... Assumed it was an O2 sensor... great to know... below the sensor are two horizontal baffles at the turn in the intake... The intake on the SLK32 does not have these and the pipe is clean...

What is your opion on removing the lower baffles to increase airflow ???

PS: Triplets ??? I just looked at your album... Congrats... You must have the patience of a saint...

Derek