A couple of Roe HF cats questions

[V10SpeedLuvr]

If I order Roe HF cats:

1. How much added RWHP/torque can I expect?

2. How drastically does it change the sound of the exhaust? Right now, I have stock cats and no muffler, and I really like the sound, so I dont want to any drastic noise changes, but if it was a little "throatier" at high RPMs, I'd be really happy.

3. How hard is it for an exhuast shop to install? (aka how much labor should i expect?)

TIA!

 

[Newport Viper]

It is much louder then stock, but I had side pipes.

 

[RedOne]

You can't get an exhuast shop in FL to remove cats from a street car, you may have to do that yourself...

 

[2MANYTOYS]

Random Hi-Flows is the way to go.

 

[plumcrazy]

i got the roe ovals and the sound IS defintely more throaty all the rpm's.

the power is really not much but its worth it for sound and keeping the sills kooler

 

[JKVIPER]

I put Roe High Flows on my Corsa on my 2001 GTS to help cool the side sills and make it a little louder.

The result was much louder exhaust especially at WOT with more drone. I also did not think the side sills were much cooler. Not sure about horse power gains, but from an exhaust note standpoint I would keep the stock cats.