I want to do something similar to see if it affects oil consumption. I'm suddenly experiencing heavy oil consumption (went from 1 qt per 5K to 1 qt at 500 miles) - Joe seems to think it's a faulty PCV so I replaced it today (I had just changed the oil and put in a new PCV before driving down to FL last week - was really surprised to see the dipstick almost a quart low at 500 miles). Coming back up yesterday (another 500 miles) and checking this morning, I had to put in 1/2 quart. Something is definitely up and I was thinking that putting on the breather catch can would be a useful experiment.

-- John