Acura Tl exhaust system parts

I have question about the 3rd-cat regarding it's location and what it do.

First of all, is that the location of 3rd-cat in a tl that everybody is talking about that will result me more power and great sound by simply getting rid of this?

Also, what is 3rd-cat's primary duty? What is it designed to do ?

Sorry about so much newbs question, I'm beginner trying to switch my exhaust system to gain more power and throaty sound..

 

Part number 1 is the third cat. You have the mid muffler circled, you can delete it for a little more sound

 

item #1

 

If I take that mid-muffler out, i don't need to replace with anything else ?
Wouldn't the pipe be short then ?

 

Replace with a straight pipe. Any exhaust shop should be able to weld one in for you.

 

Here ya go

 

You can replace the 3rd cat with a test pipe and not have a CEL but you won't pass emissions if your state does a visual inspection. Replacing it with a test pipe might give you some marginal gains in power and sound but don't expect much, its actually pretty free flowing. Same with the mid-muffler (what you circled), some minor gain in exhaust sound but since it is a straight thru design, don't expect any performance gains.

Your best bet would be to replace the factory J-pipe and 3rd cat with a long tube J-pipe, remove the mid muffler and replace it with a straight pipe and swap out the factory resonator with a Magnaflow or Dynomax resonator. The J-pipe will give you a noticeable performance gain and removing the 3rd cat, mid-muffler and changing the resonator will increase the sound of the exhaust without making it obnoxious.

 

thanks for the info, it helped me to understand a lot !

 

As Scottwax mentioned you can replace the 3rd cat as it is not monitored by a sensor. You won't get a check engine light, but there is a small chance you won't pass emissions if you go through a visual. That being said, most of our customers still pass since the precats are left in place.

He also mentioned you will get a noticeable power gain from deleting the 3rd cat, which is true as well. Deleting the third cat frees up a lot of power since the oem cat is very restricting. We have our V2 J-Pipe available on our website for $475 not including shipping.

XLR8 J-Pipe - Excelerate Performance - Japanese and European Performance Specialists!!