Introduction To Roth Automotive Science › Forums › Performance › What is involved with adding a turbo to improve performance? Tagged: knock, performance, turbo, turbocharger This topic has 1 reply, 2 voices, and was last updated 4 years, 6 months ago by theory816. Viewing 1 post (of 1 total) Author Posts October 19, 2020 at 9:34 pm #433 theory816Participant What brand kits do you recommend? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In