Sooo i'm not sure how loud i realy want my s2k to be after having a sti and vr6 both with 3inch straights on it for the last 3 years. but i was thinking about jsut taking the factory cat out of the car with a test pipe. Just wondering what the gains would be..... i'm not used a to a N/A motor.. i'm sure its not that much, and lastly how is the sound withthe stock muflers pipes ect.

 

If you removed the cat, you will be expecting to see about 3-5whp.

 

Sounds better too, a little deeper meaner sound especially at WOT...The only dowside I found (besides the environmental damage) was that with the topdown at stoplights you could smell the stinky exhaust.