I don't know why there are so few dyno tests on filters, exhausts, chips, cats etc.
I find them fascinating.
https://www.youtube.com/watch?v=GK329_MhMuM
yes I don't know how to posts links
I find them fascinating.
https://www.youtube.com/watch?v=GK329_MhMuM
yes I don't know how to posts links