What are Recommended Downpipes&High Flow Cats?

[Heavy-D]

To make my car have a full Turbo-back exhaust I am going to buy a downpipe, high-flow cat and an o2 sensor housing. For those of you who have these items, what do you think would work best with my car?- 1992 GSX w/3" Apex'i catback exhaust. I know the downpipe and cat will be 3" and I was wondering if the Apex'i downpipe would work best with the exhaust.

 

[TalonTsi85]

You can get any down pipe. You not going to see if any different results from different brands of down pipes. Size is the only difference, You don't want to get a cat. Just put a test pipe in there.

 

[VBGSX]

I would recommend this one.
http://www.roadraceengineering.com/eclexhaust.htm

Just scroll down the above page.
Good luck

 

[Heavy-D]

Thank You. Is there any advice for the O2 sensor housing?

 

[VBGSX]

There are actually a lot of companies that make them.
Here are a couple:
http://www.dsmtuners.com/parts/default.php?cPath=2_137_28

It also depends on what kind of turbo you plan on using
Internal gate
External gate

I'm currently using a ported 2g O2 housing. I Hogged most of it out myself.
If you don't have the tools to accomplish this yourself, there are many companies that will do it for you.
Here's one
www.slowboyracing.com

You also have the option of using an EVO III o2 housing(I think there is one in the above link).
If you go this route, Road Race Engineering(posted in my first post) makes a Downpipe that matches the EVO housing's bolt pattern and angle.

I hope this helps