Here they are, the prototype of my own exhaust.
Currently it is only for the 35i, since my car is 35i.
The sounds is nice, got to work on some of the fitment still.
I have yet to find a way to record the sound. Tried with iPhone earlier but it came out not the same as the real thing.
Next, I am going to get the tip to be painted Gloss Black.
Enjoy.
update:
Gloss Black exhaust tip with Evolution Racewerks / ER Catless downpipe.