S50 exhaust recommendation

[BigAl325i]

Appreciate the info thanks everyone will keep you updated.

[BigAl325i]

When you say "Submit everything online" what am i submitting exactly? I highly doubt the guy that did the swap has any docs of the engine he put in the car.
might just skip the trial and...

[BigAl325i]

I’m up by Santa Barbra

[BigAl325i]

Hi all
just had a shop complete an s50 swap on my e30 and to my surprise the guy used “race cats” for the exhaust and now I’m stuck trying to figure out what I need to make this thing BAR...