I have a 2003 Touring Edition as well. Mine is a 5 speed however. I have a drop in K&N filter, and that's it. I have about 10,000 miles on it and I can get from 70 to 100 fairly quickly, takes some doing, but it will get there. I got it up to 105 last week. Have you tried disconnecting the battery? I did about a month ago and it seemed to make a noticeable difference.
__________________
|