Well I bought my car new in June of 07 with under 10 miles on it. Broke it in nice with some light boost. Let me say im a motorcycle enthusiast of street and dirt I don't take it easy on my motors but I am not one to forget to service them. At 8,000 miles I went catless with the cobb ots map and about 1000 miles ago I was tuned by Shawn Church who is a really knowledgeable person who I will take my car to in the future. Now I'm at 59,098 miles and was racing a c63, we did around 5 pulls and let me say that damn those cars sound nice when they are flying by :lol:. I pull up to the light to turn left onto Ortega hwy and the car is shaking a little more than usual at idle so I've already got a clue that the ringland is cracked, I think I actually laughed. Hooked up the ap tonite and heres what we got. Im thinking Rallispec, Vigilant motorsports, open to suggestions. Thanks everyone.