Questions Regarding Planned Exhaust

[SKITTLES]

Okay so I'll be getting a new exhaust some time in the next couple months, and I was wondering what I should be looking for?

I've got the RB25DE S2 R33. (no turbo).

Due to the lack of the turbo, I was told that I should be looking at 2.5" piping, mandrel bent. I want to get a varex xforce muffler (the valve one) so I don't have a loud exhaust all the time (especially on long trips or if my girlfriends trying to talk to me). Are they any good at muffling the sound when the valve is closed?

What should I be looking for in regards to the headers? Is there some sort of configuration I should keep an eye out for (eg/ I know 4 cyl cars have 4-2-1 and something else, is there something similar for 6cyl cars?)

What headers have you guys had good experience with? What are you using? Did you get much of a power increase out of them?

Also, with the cat, is there anything I should be keeping an eye out for?

Thanks in advance.

[Hybrid905]

Yeah mandrel bent for sure you can either go stainless or mild steel there are the obvious rust comparison between the two but sound wise i have heard that MS sounds better. also you will most likely get a header config of 6-1 as thats what most places will want to do for you. also make sure they are coated headers, usually ceramic.

brand name is out of the question as no one makes them for NA skylines, at least 34's not sure about 33's but im sure its in the same boat. there are cat back systems you can get that are brand name but, with the name comes the dollars.

The varex is a bit of a mixed opinion. some people think its great some hate it and shake there head when they see it. but as for quietening the NA, as you dont have the turbo to muffle your exhaust sound, the varex seems to do well with quieting things especially when you are close by to the boys in ss's and xr'6s :-) and its meant to give a good sound when open try searching for a you tube vid there use to be one around.

as for the piping yes 2.5 inch is the way to go. some ppl say 2 3/4 but you still need that back pressure in the NA so no point going any bigger than 2.5.

and finally the cat. you want to find a high flowing ceramic cat.

hope it helps

Edited January 3, 2011 by Hybrid905

[SKITTLES]

that helps greatly, thank you.

how much would i be expecting to pay roughly? $1300?

ive seen the video on youtube. i didnt notice a masisve differenxe but that was on camera and next to the muffler, so its a bit different to inside the cabin irl. i was interested to see if people were happy with the results.

so youre saying there are no brand name catbacks? no fuss, was gonna get the local exhaust shop to do the piping anyways.

oh, another question; if i get the headers cat piping and muffler, is it sifficult to install all of this myself?

[rorz]

Mate there are a huge number of threads regarding this issue, unfortunately the new search function doesn't seem to be working properly.

Sift through the NA forum pages and you will see hundreds of exhaust threads. I did a huge amount of research and it actually seems 2 1/4 inch is the best for all round driving, 2.5 for slightly better top end with a sacrifice in low end, and 3" is straight up too large (unless you want a nice power figure on the dyno with f**k all drivability).

You could install some things yourself if you purchase them off the shelf suited for your R33 (e.g. cat back will just bolt up, as with headers).

Extractors may not give you a higher power figure but help in the respone of the throttle. More snappy.

As for the varex, i personally think they sound awful - open or closed. I would get a nice twin-tip that sounds throaty but not too loud but that's just me.

*NOTE TO MOD: i think it would be awesome if you could bundle together all the exhaust size threads into one big sticky becuase it is clearly a common topic.

[TwoCents]

I have the exact system that your looking to get have these extractors http://www.dkne.com.au/nissan-skyline-r34r33r32-rb25-p-415.html with 2.5" mildsteel piping, 250 cell cat, hotdog resonator and the varex cannon.

Tbh i quite like the sound except for the top end where i think the valve vibrates, you can hear it in this video.

When the exhaust is closed you pretty much cant even hear the exhaust it is so quiet, great for highway driving.

The varex muffler is much better than the previous no name cannon that was on there, it has pretty much eliminated the raspy noise and has given it a deeper idle.

[SKITTLES]

Mate there are a huge number of threads regarding this issue, unfortunately the new search function doesn't seem to be working properly.

Sift through the NA forum pages and you will see hundreds of exhaust threads. I did a huge amount of research and it actually seems 2 1/4 inch is the best for all round driving, 2.5 for slightly better top end with a sacrifice in low end, and 3" is straight up too large (unless you want a nice power figure on the dyno with f**k all drivability).

You could install some things yourself if you purchase them off the shelf suited for your R33 (e.g. cat back will just bolt up, as with headers).

Extractors may not give you a higher power figure but help in the respone of the throttle. More snappy.

As for the varex, i personally think they sound awful - open or closed. I would get a nice twin-tip that sounds throaty but not too loud but that's just me.

*NOTE TO MOD: i think it would be awesome if you could bundle together all the exhaust size threads into one big sticky becuase it is clearly a common topic.

I've researched a fair bit. I'm looking for kinda reassurance and tbh, I didn't really look up which headers to go for.

I do agree with the idea of a consolidated exhaust thread. We need a proper sticky with updated, comprehensive information.

I might throw up the results of some of my research when I'm done and have it installed

I have the exact system that your looking to get have these extractors http://www.dkne.com.au/nissan-skyline-r34r33r32-rb25-p-415.html with 2.5" mildsteel piping, 250 cell cat, hotdog resonator and the varex cannon.

Tbh i quite like the sound except for the top end where i think the valve vibrates, you can hear it in this video.

When the exhaust is closed you pretty much cant even hear the exhaust it is so quiet, great for highway driving.

The varex muffler is much better than the previous no name cannon that was on there, it has pretty much eliminated the raspy noise and has given it a deeper idle.

Thanks very much. I'll watch this video when I get home tonight

Just wondering, is that an average price for headers?