Xdkidd, I have no idea without seeing it. My mid pipe came in two lengthens of pipe. So there is some adjustability, but not much.
Cxtkrs1, I don't think you'll be getting it. If you would pay for it, I would get it dyno'ed for you, but I also don't have the stock exhaust for a baseline. They dyno'ed the header/mid pipe on the corolla, but they had some issues. The dyno sheet was in mph instead of rpm and the car was overheating on the dyno. They got a graph, but it was not very helpful. If you would like to see it, it's on Toyota nation 10th gen corolla forum thread name with PPE headers. From looking around I don't see dynos for the weapon r or it's clone dc header.
---------- Post added at 05:42 PM ---------- Previous post was at 05:24 PM ----------
Ah, here some of the corolla rpm pics including the not so helpful dyno.
http://s1081.photobucket.com/albums/j346/RPM427/