They had dirt and oil in them. I'm sure the oil is from the K&N. I wonder if there is a better filter to use. Anyways, I didn't want to start my engine with the dirty piping and intercoolers. Wanted everything to be clean .
Mike
Follow Ups
Just cleaned intercooler piping and stillen intercoolers - MikeH(Phoenix)19:50:19 09/30/00