I'd say go with cats. It's better for the environment for one...and these cars are already pretty bad from an emmissions standpoint as it is (compared to other cars out there). Besides that, the fumes from a catless system might be a bit unbearable. I ran a catless system on my Mustang and it wasn't bad while driving. But it got bad in traffic, at a stop sign, and at red lights...especially in the Summer. It's a bit embarrassing. A catless system will give you more power tho. But you should also check to see what is legal in your state. Because the cops can pull you over and do an on site inspection and impound your car if they want.
2017 Camaro ZL-1 A10
2013 Jeep Grand Cherokee Hemi 5.7 - Tuned!!
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