Is there any difference, sound or performance-wise, between test pipes and factory cats that no longer have their cat material? Be interesting to hear before and after sound clips.
I cant answer this as i never heard what gutted cats sounded like but maybe some others in the forum will come in. I had straight pipes on my 355 and loved it tho.
I'd say these would flow better no mater what other benifits that one is enough for me, good luck on the sale, people are cheap don't give in.
The heat removal from the engine bay alone is worth twice what these cost. Also, coupled with Fabspeed's mini-catted O2 extenders ($150 i believe) I have had no check engine lights. Car sounds a lot throatier...at idle and when cruising. It's brought some new life into my Tubi.
