Well, I've been prototyping this header for mikey on my base, and all I can say is that IT MAKES POWER. I have his tri-y system w/ 3" exhaust on my car and it allows the car to rev so freely. I was acctually suprised at how much power I was able to make this weekend in the canyons. I was bored, so I decided to hit up one of my local spots. After seeing a gang of ferraris come down the hill, I noticed a little orange blob in my rear view, and it ended up being one of the new Lotus Elise. Just wondering what my car could do, I decided to punch it and started pulling away. After a few turns, the lotus was gone, so I slow down and let him catch up. After I see him again around a few more corners, I can tell he was going hard, as I try again and pull away from him both on the straight and the corners. Once I got to the top of the hill, I talked to the other driver and found out he acctually club races in SCCA, so he's definetly a good driver. On the way down, I touge'ed with a S2K and was able to pass him as well. All I can say is that this setup has made my car a very scarey car. And this is still un-tuned. Tuning will come once Mr. Hardcore gets his dyno in that freakin' huge hole in the ground that he has in his shop.