fark, sorry guys... The exhaust is awesome. I had a few things done with Chris at the time and reached 348rwkw. But, the big difference I noticed after the exhaust was the response down low/ lack of lag. It sounds amazing and isn't loud inside, which was important to me as I have kids and hate cabin noise in general. I reached awesome power, the noise stops traffic when I touch the throttle and the cabin noise is minimal... I couldn't recommend them more. I am going to get a video so you can all hear how insane it sounds. Here are some topics: http://www.fordxr6turbo.com/forum/index.php?showtopic=56142 http://www.fordxr6turbo.com/forum/index.php?showtopic=56192 I live near Campbelltown, PM me if you want to check out the exhaust in person. I will take you for a spin (literally )