I need some help picking out exhaust for my car. I would much prefer duals, as I dislike the way singles look. Anybody know if I can hook up my stock NA exhaust to the RB downpipe? Or does that require a presilencer? What do you guys suggest? I'm looking to spend no more than $500, and I have a complete good condition NA exhaust, so if I can slap that on there for cheap until I get something else, i'd behappy. Anyone have any input?

 

if you're talking about the 3" RB downpipe. nothing you can buy will bolt to it exect the rest of the RB system. you'll have to custom make something. I wouldn't use the N/A catback it'll flow like crap

 

im almost completely sure that the RB downpipe will not mate to the NA stock exhaust without the presilencer. the TII had the DP, then a connecting pipe, then the cat-converter, while the NA had 2 pre-cats. (its late...i might be babbling)

If you want, im sure if you take your car to a shop, they can fab a straight pipe from your downpipe to your stock Y-pipe for roughly $200 give or take or a custom pipe from the DP to the cat.

The cat converter back is the same on both models. that lets you use your stock dual system.

Its going to be hard (i know someone'll proove me wrong) to find a dual catback system for less than $500 that is of respectable quality.

hope this helps some
Jeff

 

Yeah, I figured as much as far as price, and I have the 2.5" downpipe, I don't want to go boosting to the sky and blowing my poor car up already Oh, and also, the NA exhaust I have, isn't 'stock', it has aftermarket mufflers on it with the stock Y-pipe and cat/precat. Anyway I can just rig this up until I either order the corskport or something else? To me it looks like the downpipe is long enough to bolt up to main cat without anything else being added, I'll have to look more closely tomorrow.

 

hey i still got the back half of the rb t2 x-haust. (y-pipe back) it was from the 3" system though. e-mail me if your still intrested

 

well, that would mean I need the presilencer still correct? What are you asking for it?

 

http://www.thunderfabrications.com/M...components.htm

 

Ahh, that would work, but I already have a downpipe, and a presilencer would cost less

 

Oh sorry, guess its getting late, lol. Didn't read careful enough. So you just need a cat-replacement? Oh, but you have the RB DP. Hmm..can you just have a shope make you an exhaust setup? Buy the mufflers and y-pipe and take it a shop. Thats my eventual plan. If it was just the cat you wanted to replace:

http://testpipe.com/htmlsite/testpipe.asp?item=Mazda

 

well, now you are saying it's just a replacement? I just need some exhaust to last me until I buy a new set. Can the 2.5" RB DP be bolted up to the main cat? Or do I need to have the test pipe in place? This is where I am confused, what exactly do I need to bolt the RB downpipe to my old exhaust? I don't need cats, so I can remove those if need be.

 

hey ryde_or_die, would you recommend that downpipe...thats pretty damn cheap..175 bux...

I might chose to go that route when i put the tII in before i get a custom system.

 

i have that downpipe. its ok i guess.

 

Ive got a RB turbo catback for sale if your looking for it.

My exhuast goes:
RB 3in DP - Main Cat - Catback.

I dont understand why there are fittiment issues.

 

Hmm, I have the 2.5" I guess I'll try to slap my old exhaust on tomorrow and see how it goes. Thanks for all the info. I might be intrested in the RB catback, can I just buy the presilencer and hook that up to the catback instead of using the cats?

 

I think thats what the presilencer does, replace the main cat.

 

woohoo, I'll see tomorrow. Thanks for the help, I hope I can just get something on there so I can get it running smoothly

 

This picture here shows exactly how my system is, with a cat being in place of the pre-silencer. Theres no modifications to my system.

 

hrm, well, the question is, does that cat the same size as my main cat? Or is it larger?

 

As far as I know, It replaces the main cat. Cause if you think about it, the DP replaces the precat, and mates to the main cat. and the cat back has to mate to the main cat. I dont thin RB would make either of these short, it would probably **** some people off. Maybe im not getting your question/problem.

 

Ok, I have a complete exhaust setup, precat/maincat/ypipe/two mufflers. What I am wondering, is can I bolt this to my RB downpipe without having a presilencer.

 

It will replaice your precat, and bolt to your main cat. A presilencer just quiets the tone. Your options are: cat, presilencer, and straight pipe. One will of these will go inbetween your DP and cat-back.

cat = legal and quiet
straight pipe = illegal and loud
presilencer = illegal and quieter than above.

 

Nothing is illegal around here, we've got headers with no mufflers everywhere around here, never seen a ticket tossed yet

 

You get the idea Did that answer your question?

 

Yeah, indeed, I'm going to bolt it up tomorrow and go for another spin, this time not rattling my neighbors houses on the way Thanks for the help!

 

Which DP do you have?