Are they street legal? Will I pass emissions with them on? With an Injen exhaust and Borla headers.

 

Technically, you aren't supposed to upgrade cats unless you have more than 50,000 miles on the car or the stock cats got damaged. But there are a lot of people that have them, and I would guess they are easier to get through an inspection than test/race pipes

 

The sound from the cats is amazing. And the power increase is noticeable throughout the RPM range. I haven't had a chance to dyno my car at all yet, but there are several dyno charts floating around this site if you feel like searching.

Well worth the upgrade. I passed emissions with the cats and the Borla True Dual system.

 

dont ask dont tell ! just do it.

Love the RT's My TRACK Sounds sick with them

 

Do R/T cats have a "raspy" sound with the stock exhaust?

 

with the nismo exhaust, in 5th gear at high rpms, it gets a little raspy imo.

 

yes there can be a slight raspiness from time to time in
the upper RPM's nothing big really. Mostly just a deep growling loud tone.

 

What's the best price that anyone has found?

 

Before you, or anyone for that matter, thinks about R/T Cats. You might want to look at this thread.

https://my350z.com/forum/showthread....threadid=73805

Lou

 

hehe...thanks lowrider...way to kill a rally

 

actually i've recently had a problem with my rt cats but that doesn't mean they're all lame. I definitely felt like they improved performance. That being said, in retrospect, I have to wonder why i didn't get test pipes in the first place. If you're willing to increase pollutants and risking smog violation, then why not go all the way.

 

Why not just get Hi-Flow Cats that work?

I've never seen this type of problem with the Kinetix or Crawfords. My Crawfords are great BTW.

Lou

 

I my be wrong here, but I think way more people are using the RT's, hence...there are most examples of defects.

It just seems odd becuase RT has been making high flow cats for years and years...and I have never heard anything bad about them until here..on this forum.