Catless downpipes minimize backpressure and hasten turbocharging by minimizing the adverse outcomes of getting an exhaust system following the turbo. In The us, It's not at all lawful to install a catless downpipe however some nations do allow for them. Having said that, For those who have substantial-move cats put https://trentonsxbdh.wikihearsay.com/2736934/the_greatest_guide_to_catless_vs_catted_downpipe