I need some help with this. My cats **** the bed a few months ago so I went out and got the Z1 high flows. Unfortunately now my G sounds like a Honda Civic. They’re paired up with a full stillen cat back. I’ve had the same one on my 04 G and it sounded fantastic. So I’m looking at a couple of different cats now. I’m looking at the berks and the invideas now. Do any of you run either of them? How do they sound? How’s the power? I have to say I’ve gotten great power from the Z1 set I have but I just can’t take the sound over 3500 rpms anymore.

 

Had mid-range - high RPM rasp with the Berks. Power was good though, but the rasp was too much (had invidia q300 full exhaust). Got Fast Intentions resonated HFC's, all good. I'm not sure about the invidia cats, unfortunately they weren't making them back when I had my '11.