[E92TiAg335i]

Hey Guys.

I'm currently FBO minus a midpipe. I really miss the sound of hearing my turbo(s) from my N55 - so a midpipe looks to be the missing piece of the puzzle from numerous videos that i've heard.

I actually like a bit of rasp as it reminds me of my old FBO e46 m3. What i do NOT want is drone. the car still has secondary cats (stock midpipe) and stock muffler.

I'm currently debating between the AA single midpipe or just doing a "custom" midpipe (see attached). The 2 main factors are performance loss (or gain) and drone.

From what i've seen/read is that the AA single midpipe causes a loss due to the sizing actually being smaller. I do not want to go down this route as the car will most likely be built with bigger turbos in the future. Does this midpipe cause drone?

The other setup (see attached) is the setup i was considering as well, but obviously would rather not chop up the exhaust system as much as possible. Does anyone run this setup with catless downpipes? how is the sound and/or drone?