tetsuo111 Didn't you have a video of the exhaust before? I seem to remember it being a tolerable volume level.
I have the Super Sprint Mids into my BMW PE, they bolted up almost perfectly, but did require some trimming if I remember correctly. Also, I believe the SS mids are about the same diameter as stock, and the AFE pipes are larger.
The only dyno I've seen specifically for AFE mids was from
jc5988
But a couple of notes here: N51's likely have a more restrictive secondary catalyst in comparison to the N52 (it's a different part number) and you can't really establish a trend on 1 data point - so I can't say definitively they
always lose torque
http://www.e90post.com/forums/showth...&highlight=Ess
RED is ESS tune + PI
Blue is above + PE and AFE Mid Pipe
That being said, I've seen other dynos of the secondaries removed (smaller diameter piping?) with and no loss of torque, so take it how you will.
Made a thread about this a while back (when I had insomnia and had plenty of time to read):
http://www.e90post.com/forums/showthread.php?t=1149179