I am stage 2 right now. Should I go stage 2+?
#2
I did and have no regrets.
There are many debates as to whether downpipes help dissapate heat from the turbos or creat overspin, and instead shortening their lifespan. A search will provide a lot of information on these subjects. I've had downpipes for about 15k miles and have had no problems, the power difference is very noticeable and turbo lag is decreased significantly as well.