This is why you FREEK

[Scare Dem]

Originally Posted by MD1032 Great results! Hope you don't mind if I pick your brain a little bit here. A few weeks ago I was talking to a local and he was steering me away from the BNR S3 and towards a GTX2867R. In researching what this turbo can do, I have found that it is much more in line with my goals, which is right around what OP is putting down (I'm also at sea level, w/93 octane), with room to grow in the future if I decide to build my bottom end. Right now I am thinking it is most logical to either go with the ATP GTX2867R IWG kit, or the ATP GTX3067R EWG kit...with a lengthy and expensive list of supporting mods including a Freek tune. The reasons I would choose an ATP kit are convenience and cost. My question is whether or not you're getting any creep with the catted CS long downpipe and the ATP IWG. In looking through MSF I have found: 1) Everyone universally says that you need to upgrade the downpipe to run a larger turbo like this 2) People with catless downpipes are all getting creep 3) People with catted downpipes are sometimes getting a small, but not necessarily problematic amount of creep What I don't understand is why I couldn't run the stock downpipe with a test pipe. I have a hard time believing there's some kind of massive increase to be had going from the stock DP with a TP to a catted long DP. Thanks in advance for anyone's input here. edit: I forgot to add, said local was adamant that I get a 3" catless downpipe.

A good free-flowing exhaust is best with a bigger turbo.

Does a downpipe make a difference?