I am going for a turbo swap in my S4, and I want to change my turbo. Whats the stock flange for on the exhaust manifold? a T4? And what kind of turbo should I go for? T60-1 comes to mind, with 1600cc to be sure not to run lean. Looking for around 275 rwhp.

Am I off?

Thanks!

 

there have been several threads about this recently, including about 60-1's.

and the stock flange is a proprietary design. nothing really bolts up to it as far as I know.