explain this to me like i'm dumb. Because honestly I am on this topic. LOL. The Turbox - turboback. Does that still mean losing the cat. converter?

 

Anyone tried Tomei Ti test pipe?

 

I'm in the same boat as you! I stumbled across an UR for a good price, but does anyone know if it bolts onto stock cat without any problems?

 

Yes you will be loosing the stock cat converter. Turbo back means the whole exhaust from the turbo all the way to the exhaust tips. You get a down pipe, high flow cat or test pipe to replace the stock cat, mid pipe, and then the rest of the exhaust (axle-back) which includes the muffler.
With just a catback you will get a louder tone to the exhaust (depending on which brand you get, some are louder than others). You will also pick up a few hp. Also dont have to worry about emissions, or a tune.
With a turbo back, the exhaust will be much louder. The test pipe will be the loudest and give you the most performance. The high flow cat is pretty close to the performance and loudness of the test pipe too though. Think of it as an inbetween from stock cat and test pipe. With the test pipe and the down pipe combo you will get the most performance, compared to a down pipe and high flow cat. Then the least performance would be the cat back.
So if you want just the sound go for the cat back. If you want performance go for the turbo back. Also with the turbo back I would recommend getting a tune shortly after getting it installed.

Depending on which state you live in, emissions will vary. Here in az I don't have to get checked for emissions,so I can take the risk and choose to get a test pipe if I wanted to and not have to worry about switching it out every time I have to go get emission tested. But I still think in all states it is pretty much a no no to have a test pipe no matter what. Hence the name "test" pipe. So cops could still check me here in az if the wanted too, but they don't really care much here. Cali is a different story.

 

ralliart1 just explained it better than I've ever heard. I needed it broken down into lamen terms. Thanks!

 

When a turbo back is installed, do you have to remove the old O2 sensors from your original cat or does the new highflow cat/ test pipe come with O2 sensors already installed?

 

You have to remove them and then reinstall them on your new exhaust. Easy to do though.

 

You will need to use the old o2 sensors.. If you can get them out

 

How much are O2 sensors if I can't get mine out easily?

 

Over $200 a piece! Found that dealers are charging over $400!!!

 

I think I've seen some o2 sensors for under 100

 

Go buy an O2 sensor socket. Autozone sells them. Shouldn't be too difficult to get out then.

 

Does anyone know if replacing the stock cat with a high flow cat but leaving the rest of the exhaust stock would be a waste of money? My stock cat or O2 sensors are lighting up code P0420 and my MPG has gone from 25mpg to 21mpg. Am i going to see any performance increase? I'm thinking of the TurboXS HFC http://www.importimageracing.com/tur...-ralliart.html

 

Great choice! I love my Buschur Racing exhaust, but I have always felt that the Borla exhaust sounded more "meaty". However I got a great deal on my exhaust so thats probably the only reason why I went with it over the Borla. If you're not too far from the GW, we should get some sound clips when it gets warmer.

 

I've got the UR exhaust bolted on to my stock cat no problem