More power
I just finished installing the dump / cat, took me 5 hrs getting the studs on the new pipe was a damn nightmare, so tight. Got there in the end though without breaking anything, did strip one the bolts a bit but I can still get it off and replace it if need be.
Seems to have more power, I'm guessing 10-15 more rwkw.
Just need to keep an eye for any exhaust leaks over the next few days.
EDIT: One thing I noticed is that the boost doesn't seem to come on as violently, which almost makes it seem slower in a way because you dont get the sudden push. Is this normal with a larger dump? (I assume larger dump pipe decreases lag?)