Thinking about buying some highflow cats, for my na z32. Is it worth it? Any idea on power gains. I already have a cat back exhaust system. Thanks!
If the stock cats are hollow/blocked or mushed up it would be good maintenance to replace em. If they are still fine, you won't see really any more power. I had extractors and the cats and the cat back system done on an NA years ago. But not the front pipes. Don't recall why. But it had the same ballpark power as every other NA. Somewhere between 'soft' and 'I'm bored'.
I went from 200cpsi metal cats 214rwkw @14psi same timing map etc Put on 100cpsi ballastic racing cats 217.8rwkw @14psi Metal cats were still fine as on- sold them. While difference was small, there was a difference. However wether attributed to the cats or maybe just a lucky 2 dyno runs. I can't say.
Lol if you think I have these still than sadly I will dissapoint you, This was my old engine (years ago) I only have the before one I think somewhere
