Several have asked for a comparison of same car model, same engine, and similar miles with a can on from day one and one without.
Here are pictures of a car that the owner installed the E2-X system the week he bought his new Camaro.
This car now has 51,000 miles on it and these were just taken. As you can see, minimal coking as we stop app. 95% of all the oil and other gunk. Here is the SAME make/model/year (2014, first car is a 2015) and it has 43,000 miles and NO catchcan.
Then we look at the other advantages. Fuel economy will increase by 8-10% on average due to reduced knock retard, oil remains cleaner longer as were evacuating most of the contaminants before they can settle and mix with the oil, and of course a slight power improvement also due to KR reduction