Originally Posted by Sloppy
I can honestly say that those secondary cats take 70% of the smell away! I have yet to idle my car in a drive through and actually smell something. I would idle my car in the garage with the same smell as it was catted.
Frankie, I have the exact stock exhaust as a n54 it seems so it should fit yours.
do you have the whole n54 exhaust? mufflers and piping?
where are the cats located on the n54?
I like this option, as opposed to catting the downpipe