Jump to content
SAU Community

Recommended Posts

Ok folks, I have an r33 gts-t.

Current exhaust mods are:

- Bellmouth 3inch dump/front pipe

- Xforce 3 inch cat (apparently, came with car)

- 3 inch stainless mandral bent system which also came with car. (it is jasma approved, so its quiet, one huge muffler at the rear that goes 3inch in then splits into two pipes inside and then back out with a single 3inch again, middle muffler is same brand but smaller about the size of a shoe box)

the mufflers appear so say K&H on them, never heard of them?

The car flows great, good performance, cant complain but its too quiet!

It literally makes almost no noise. It is completely drained out by the induction noise.

RB25s have a good note and I would like to get some of that without being too loud and offensive obviously.

Recommendations for a good sensible note? remove rear muffler for a cannon? different rear muffler, no rear muffler etc?

thanks

Link to comment
https://www.sau.com.au/forums/topic/328870-exhaust-modification/
Share on other sites

i would but its all welded, beautiful system. It was a novelty to have it that quiet but truly it makes no noise, no different to stock system. I was thinking have the rear muffler changed to the flange (half way between middle and rear muffler) so I can change back if needed?

Not looking for police attention just a nice, crisp but still reasonably quiet exhaust note

Edited by TUF250
i would but its all welded, beautiful system. It was a novelty to have it that quiet but truly it makes no noise, no different to stock system. I was thinking have the rear muffler changed to the flange (half way between middle and rear muffler) so I can change back if needed?

Not looking for police attention just a nice, crisp but still reasonably quiet exhaust note

i have a jasma fujutsubu canon and just a hotdog in my 3.5inch system, and its as loud as it can get before going over the allowed db, im getting a 3 inch bellmouth and highflow cat (i have stock dump/front and cat) so it will louden it up a bit! cos im after a bit more noise to, so to answer your question, since u have a similar system to mine, i think taking out the center muffler and get a hotdog (if you dont already have one) should make it sound nice.

i would but its all welded, beautiful system. It was a novelty to have it that quiet but truly it makes no noise, no different to stock system. I was thinking have the rear muffler changed to the flange (half way between middle and rear muffler) so I can change back if needed?

Not looking for police attention just a nice, crisp but still reasonably quiet exhaust note

Just get the centre muffler cut out and a straight piece welded in.

Ok sounds good. Would be cheapish too. What about this rear muffler, would it be restrictive? the 3inch in 3inch out but with the twin pipes running through it? its a huge muffler. ill try get a pic. doing the centre would be cheaper than the rear (less bends) Also I could keep my current tip which I dont mind

check out my for sale thread (in sig) for my old exhaust. unique and mildly sounding. :D enough of the sales pitch.

i got a custom 3 inch made up with a straight through muffler and thats it. same sort of sound from my old one just deeper and louder. when it opens up ~4500+ it really starts to roar. i frukin love it... my petrol seems to be draining somewhere.... ;)

Edited by SLY-25T

run a decat, will be slightly louder and slightly faster, best of both worlds!

pros.

more power

more response

louder

their cheap, sell ur current high flow cat and ur infront!

ur system sounds like a quality system, this way u dont have to modify it and f**k with anything

cons.

the environment (f**k the environment)

Edited by jimmys-33T
has anyone got a 3 inch system with a high flow cat and only one big muffler, what did you think if so?

3 inch dump pipe high flow cat and lukey turbo muffler 3in 3 out. no police attention but loud enough and seems to flow enough

run a decat, will be slightly louder and slightly faster, best of both worlds!

pros.

more power

more response

louder

their cheap, sell ur current high flow cat and ur infront!

ur system sounds like a quality system, this way u dont have to modify it and f**k with anything

cons.

the environment (f**k the environment)

CONS! the $$$$$$$$$$ Worth of Ass Raping you will receive if you get caught.

yeah wont be getting a de-cat.

I wonder if just removing the centre muffler and replacing with a straight pipe would sound good? The rear muffler looks quite big and has a twin chamber type design. K&H brand. Might be a good way to go, wont cost much either i figure. thoughts?

im in vic nismoid. I wonder if just removing the centre muffler and replacing with a straight pipe would sound good? The rear muffler looks quite big and has a twin chamber type design. K&H brand. Might be a good way to go, wont cost much either i figure. thoughts?

IMO then you are very silly to change it.

If it's quiet now, then its probably only just legal.

Changing it wil mean you are then over the dB limit almost certainly - I'm yet to see a single muffler system pass.

So you'll end up having to change back for EPA defect reasons anyway.

Stealth & silent is the new black in Vic, it's sadly the only way you can enjoy a Import with relatively low hassle.

Having it loud just simply is not worth the heartache, anyone who's battled the EPA for years (like myself), would most likely agree.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • GTSBoy on your suggestion on another thread I had a look at those injectors and ended up getting them because of the quality.  Got the expensive ones.  
    • Hey guys been looking everywhere to try and find the correct gtr hood latch support part number but only found the first half and when I search with that number it sends me to an r34. The first part I found was 62515. If anyone could help me with the rest then I’d really appreciate it. Or if there’s some alternative hood latch support that would work even better cause I can’t find any for sale. (Searched on upgarage, partsouq,buyee,rhdjapan) 
    • If you've only done the upper control arms on the rear, AND you have changed their length (by more than about 1mm) to set the camber you want, then you will definitely need/want to install traction arms also. Adjusting the camber arms on their own WILL introduce bump steer and make the car unpleasant to drive. Most owners have no idea that their car could behave infinitely better than what they put up with. I'm not entirely sure what the Stageas need, but I am thinking that unless you have massive front spring rates and pretty soft rear springs, you have waaaay too much rear bar. Oversteer city, in my estimation. Combined with possible excessive bump steer from maladjusted arms, that could be a recipe for nastiness. ATR43SS2 is not a highflow. It is an outright replacement turbo. It's a little bit bigger than the largest highflow profile that Tao does. Probably a solid 300rwkW turbo where the bigger highflows will be about 30-40rwkW less. Nevertheless, we're only talking about ~300 rwkW, which is well within the abilities of the stock ECu to run with a Nistune on board. I would do so without hesitation - and I will be doing so when I get my finger out and actually get the injectors and AFM installed. But, if you would prefer to drop a whole lot more money on the ECU side, then I suspect you're looking at Haltech. The Haltech fanbois here will all spout on about all the available engine protection you can have, that you can't have with the Nistune option. And they're right. But it doesn't really come for free either. You will spend more money on extra sensors and the like, plus the work to install them. If the engine was built and therefore represented a big investment to protect, then I'd say definitely do it. If you view the current (and forever into the future) shortage of replacement engines as something to prompt similar protection, then also, do it. If you see a destroyed RB25 as an opportunity to put in a Mercedes or other V12 (like I kinda do)... then your perception of the risk/reward might differ. These are good injectors. You can also get a "better" set of the same with more flow matching, for more $$. 1000cc is where you will want to be. You will need an R35 AFM and adapter tube if you want to stay with Nistuned stock ECU. Otherwise, if going Haltech, you can ignore. As for intercooler. Just about anything will do. You're only talking about ~300rwkW. Just put a big core in there. Be aware that return flows do add significant pressure drop and will cost power and will make the turbo work harder to achieve the same goals. If you can manage a proper crossflow, do it. I'm keeping my very good return flow because I'm only expecting to be in the ~250rwkW range, and will live with whatever outcome I get.
    • I have a heap that i have collected if you want some authentic ones still. Pm me if your interested!
×
×
  • Create New...