I bought a 2004 wrx about a month ago and the other day the middle piece of my exhaust which is about 2 feet long fell off. When i brought it to the shop and had the car lifted, there were exhaust leaks on top of the pipes from rust. right now, there is like a 4 foot long pipe coming from the cad converter and then the middle 2 foot piece is gone and then the tip is just attached in the back connected to nothing. I ordered a borla catback exhaust early yesterday that is 2.5 inches in diameter. i got overnight shipping but now i got an email saying it wont be in till next week. Is it safe to drive my car still if i keep the RPM's low so the turbo wont kick in? I also installed the stage 2 map from the perrin accessport and i can tell that i was not getting the 285 whp that i was supposed to get...prob because of back pressure problems, so will this new exhaust be a big difference in power? Ill note that there were a good amount of exhaust leaks.