Well I finally got the ATR uppipe installed. I can definitly tell the difference from the stock Uppie. The car seems to accelerate smoother now then before.
If you get your uppipe replaced take a look inside the pipe at the cat. Geez! 8O That thing is so restrective I am surprised that anything gets through there. It looks like someone rolled up a 20 foot long peice of sheet metal and stuffed it into the pipe. I literally could not see light through it.
Unfortunaly however I do have an occasional leak. It is not just under boost as a matter of fact I ran it under boost a bunch last night without it leaking once. It seems to only do it under certain occasions. It appears that it only does it when the engine rolls under hard low speed acceleration. So... I think I am going to get the STI motor mounts and see if i can keep the motor from rolling so much.