Yesterday a big group of us got together and had a dyno day in Charlotte, NC. We had everything from ricers to hard core gear heads. Well my 04 sedan/6MT stock other than Z tube, KN filter, and stillen rear section. i thought that I would pull some where around 215 HP or so. Well the G put down on its first run 229.37 HP and 222.67 torque, the second run 231.25 HP and 224.91 torque, and the third and final run got 230.98 and 223.12 Torque. These runs where on a dynojet. The conditions were inside with a 72 degree temp. and 58% humidity. The rusults are on the following attachment.

 

Pretty impressive for a sedan, when you say rear section do you mean exhaust?

 

Yea those are good numbers for your 04, my buddys 05 auto sedan managed 235.