I really wish I could give my experience on this topic. This past summer I went to Level 10 Performance and had the valve body recalibration service done. They rated it good for 250hp to the wheels. The car's shifts are much quicker and to the point. About a month before this upgrade, I dished out 2200 for a sleeper turbo kit from MAM. Well, if you've been on this forum long enough, you'll know the situation with MAM and basically, I am out 2200 and no turbo. I really was hoping that my first post on this thread was going to be positive one telling you guys that I am pushing 250 at the wheels with an automatic but unfortunately it doesn't look like it's going to happen thanks to MAM. Now I have a 02' ES with a beefed up automatic tranny pushing 96hp. You gotta love it.