Can anyone explain to me the advantages /disadvantages of a catted /non catted downpipe system please
No perceptible power difference btwn catted and non-catted
Catted costs more
Catted allows you to pass inspections in all but the most stringent states such as CA and NY. And is more environmentally of course. And more saleable.
In case of fuel injector leak and other such issues, non-catted will let u know very quickly.
Catless DPs have been blamed for blowing out oem turbo seals. Not sure if fair or not.
And welcome to EBPF!