If you donít have a catch can on your DI motor, get one! I installed mine at around 50,000km. Yesterday I installed my isolator and had to remove the top end of the motor. With a flash light I could look down the port and see my valves. They are coated black and flaking carbon chunks. I did an upper induction cleaning and oil change the weekend before so it may have been cleaner but I was absolutely shocked at what I saw. I couldnít get enough light down the hole to get a picture but Tracy has posted enough so you can get the idea.
As I said above I was installing the isolator this weekend and took the car for a boot this morning. It rips! What a change with such an easy and inexpensive mod. Iím a fan and advocate for RevXtreme. A wrench, couple of sockets, gasket material and a few hours is all it took.
I took a bunch of pictures, Iíll see if I can post them.