Well see my signature..... My engine is currently being tuned by a friend of the family that just happens to own a dyno facility so ill let you know the numbers and the track times when i get them. As far as quality there, like it was said above, it is there, i cant see any flaws externally, as far as internally only time will tell but im pretty confident with it, i have alot of other friends that have used DSS and loved them. good luck.