thus far i went from stock housing to a epm o2 dump i felt some gains, noise was awesome, but recently i switched to the buschur ss o2 housing and , vert noticeable difference spools turbo 500 rpms sooner and when i am just cruising and step on it fullboost is reached must faster, i was very surprised, my thoughts as to why this is the case is due to the dump having 2 circular holes that mate up to the turbo when the outlet of turbo itself is more of an oval shape, just wanted to post this up and see if anyone has done this before, but a very noticeable difference all around

 

which was better i like the epm but if reg o2 is better then prob go for it

 

Glad to hear the swap make the boost come in sooner, I was pretty certain it would. Enjoy the car!! Thanks for coming in to be tuned.

 

reg style like buschur ss housing was a lot better then epm o2 dump imho brings boost 500 rpms or so sooner plus cheaper then epm dump, just sucks i bought dump first, time to sell now