[steve00s]

I actually live in Bellingham. I state Seattle as more people know where that is. Do you ever participate in any of the other PCA events?

I talked to my mechanic about my problem and am stopping by his shop later this afternoon to try and diagnose. The fit of the header was not perfect and they may have moved something else closer to a heat shield causing a vibration/rattle that may explain the rotary similarities. Also he stated that cats quiet a lot of high frequency sound. At any rate we are going to put it up on the lift and take a look.

As far as the lack of additional power, it really is hard to tell around town. I think I will be able to tell a little better tomorrow at the track. Besides, I was a little preoccupied with the horrible sound and wasn't too focused on the performance aspect.