Catalytic Converter to match Full Race Exhaust?
 

Car: 2011 Si Coupe

Does anyone have knowledge of a catalytic converter with a 3" opening to match a Full Race Exhaust system.

Soon I will be boosted and I want to get everything to a 3" diameter and the only thing left is a Performance catalytic converter (if there is such a thing).

U can get a high flow cat that's 3" from flowmaster.

Just delete the cat or buy high flow cat its basicly a test pipe.

you're not going to want a cat in there with boost as that will restrict the hell out of your exhaust flow. plus flashpro can disable your 2ndary O2 neway.

If your concerned about emissions, You will pass as long as you have no CEL and Flashpro can disable your O2 sensor like redbone said. I had to emission my 08 si last month and its turbo all they did was obd2 reader and gas cap check

Running on a turbo with out a cat will not kill my engine? I thought that was the point of having a cat.

the point of having a cat is to keep emissions down. you don't want restrictions in your exhaust especially if you are boosting. you're gonna have to get that shit tuned to run anyway regardless