Open dump ftw. Sounds awesome and helps spool and overall power. Only more noise wot and so worth it.

 

Yep open dump on my previous turbo car. I loved it and so did the wife. When your going wot I did not care about sound level and it sounded great IMO. The look on people's faces when they saw a sleeper S2000 just roar and move like a bat out of hell was priceless.