Hey guys, I need some help. I have a 2000 Silverado, ex cab with a 5.3. Currently the upgrades are hypertech chip, and 160 thermostat, msd wires, K&N FIPK, borla cat back system. I am wanting my exhaust to be a little louder. I was wondering what you guys think of hi flow cats, and which one would be good for me. I live in florida, so there are no smog tests out here. I just need to know what would be a good setup for me.

 

If you want it louder take the cat out if you have no smog. And as far as i know and have been told we already have HI-flow cats on our trucks.

 

Take off your cats. Your exhaust will raspy louder and you will also love your new found power up high.

 

go for it