I just purchased my GMMG exhaust it should be here next week. But I have been doing some research about having no cats with the gmmg. I have gutted cats with the SLP 2OTL system right now. I love the sound but I want more volume. And I want it dual exit. So I spent the money for the gmmg. I am just worried it won't sound good with my gutted cats. Has anybody heard this system with no cats? Do you think I should get high flow cats when I install this system? I have stock gutted cats on right now.

 

it will rasp a bit, but other than that it should sound normal.

 

Like said above, it will rasp a bit.

I mentioned in my email that I was running an ORP, so my car may have rasped more than yours will. It will still sound good IMO.