Hey Paulik,
I think Vits pro bro made 367 its somewhere in the dyno graphs. He had same setup as me I believe however he had catless dp and 3" exhaust. That should hit 400 on this dyno for sure. Especially with nice weather. I went with peak cali weather it was hot and humid as hell 96 degrees ftl... I believe when Vit first dynod here with my prev setup it was 60s-70s. Thats almost like 20-30 degrees which should net 1-3% more powa I believe. The runs were more back to back after my drive from work during lunch time.
I really wanted a quiet setup to be sleeper and more smog friendly. I live in the city and it is already polluted enough. Vit said the loss of power with a cat in there is irrellevent with e85, not with 91 though. I havent dynod my car with without cat with this setup so I wont be able to prove the loss in power, but I'll take vits word for it and enjoy my car with super quiet exhaust system. I figure the numbers seem consistent that if vits bro hit 367 with catless 3" catback setup I'm probably only 15-20 hp behind him. Im sure adding the full race 3" exhaust would yield those gains though even with a cat in there.
Lastly, what did you mean by fill those mounts sorry I didnt understand that part? You mean get mounts? Im happy with the rear 62a mm upgrade lol. It cant hold all the power but still makes the power a lot more usable.
Best,
J