F.I. :: About to pull the trigger... give me some input

OhioYJ

So which is it noise or power gains? Sorry doesn't seem like both here. Cats do both, and everything adds up.

I can see saying the cats aren't worth it because a tune is recommended. However that would again result in more power, and a car that is more responsive. I could also see maybe even not wanting to deal with the install.

The cats are roughly a third of the cost of the exhaust you are looking at, and you are still saying they add roughly a third of the power at least? I'd say that's substantial. I don't think anyone would deny that factory cats are the most restrictive part of the factory exhaust system.