The functionality benefits of the tested catless downpipe are negligible, if they exist whatsoever, vs . the catted downpipe useful for this comparison subsequent the procedures explained above, beneath the situations at the time this knowledge was recorded. Changing the cat+the downpipe all alongside one another isn’t a foul plan. https://jaredpvae95284.fliplife-wiki.com/3407858/demystifying_downpipes_a_closer_look_at_catless_vs_catted_downpipes