Finally found some time to work on the leak. Didn't see any signs of leakage topside so I was leaning torwards the ARV. Removed the two bolts topside and crawled under the car to remove the bottom bolt. Was looking around with my work light and found my problem. I have a small hole about the width of a dime and 3/8 inches long on the very bottom of the exhaust turbine housing! I hate to be a cheap and lazy f--- but is there anyway it can be patched with an extreme heat type epoxy or something?