Here in cali they pull us over if our exhaust is too loud. I have a perrin on my current build (370 whp) and am in process on a bigger setup.
Fujitsubo was recommended to me as a good option -- great reputation and the forums seem to agree on the exhaust note.
Specifically the Authorize R is...
Hey guys. I have a 2018 STI that I’ve Been working on for about 2 years and here is my current Engine mod list.
Nameless turbo back exhaust
AEM high flow fuel pump
Cobb flex fuel sensor kit
Cobb fuel rails
Cobb 1050 injectors
Flex fuel tune