Jump to content
SAU Community

Recommended Posts

Hey Guys

I got my dream car but it's far too loud!

Some specs -

TRUST extended split dumps

EXHAUST TECHNOLOGY custom twin system with Apexi valve and custom cross over pipe...

Pic of split System

Pic of tail pipes

What is my best option for quitening the car down without ruining the performance?

I'd also prefer to keep the tail pipes rather than go for a single big drain pipe.

Thankyou..

Edited by futurewa
Link to comment
https://www.sau.com.au/forums/topic/195515-custom-split-exhaust-system/
Share on other sites

Get some decent mufflers mate, looks like you have two pissy cannons and thats it. :)

Which basically wont do anything... ! One of my mufflers is probably better than the two you have.

The cross-over's purpose doesnt reduce noise either, so not sure why you mentioned it :(

I have the same from section as you (Trust extensions), two BIG custom mufflers, 94dB 3.5" all the way and will flow over 350rwkw.

Done and dusted ;)

There have been a few "exhaust noise" threads now, and ive posted pics of mine in there 2-3 times so have a search if you want a visual.

sorry, but whats the point of the crossover section?

I think it has a similar effect to a balance pipe in v8's.

If you didnt have it it would be like having two 4cylinder motors creaming their balls off, and you would loose the V8 grumble.

And in this case, two 3cylinder turbo motors.

I wonder what that would sound like :)

The cross-over's purpose doesnt reduce noise either, so not sure why you mentioned it :)

it does actually but your right those rear mufflers wont control the noise, must admit though marky mark is without a doubt the best exhaust shop in aus. im sure if you go back and say i want it quieter he will do it.

i wish i had the oppurtunity for him to do my ltd exhaust :) he has done plenty of work for me in the past and shits on anything else i have seen from anywhere.

I think it has a similar effect to a balance pipe in v8's.

If you didnt have it it would be like having two 4cylinder motors creaming their balls off, and you would loose the V8 grumble.

And in this case, two 3cylinder turbo motors.

I wonder what that would sound like :)

Yer to start off wid in my torana i had a twin exhaust and it didnt crossover and it had a reali bark sound to it.. sounded reali bad especially when reving up higher... then it was rewelded with a cross over, it lost the bark sound and made the lower V8 rumble stand out more... is beautiful :)

not a 100% sure but the purpose of the balance pipe on a v8 is to balance the back pressure between the two banks, so its not needed on a turbo car as the turbo's create the back pressue for the engine, not the exaust

but the system looks good, id just chuck a muffler on each side, should quiten it down a bit

You'll need a couple (one for each pipe) of centre mufflers or silencers/resonators. That's the only way you'll get it quieter without changing the rear mufflers, which look too nice to change.

silencers/resonators wont do a thing.

The cross over is something alone the lines of below, its probably not exact, but yeah... just a starting point.

To even the exhaust pulses/tone. (nfi the true term)

If you have 3 cylinders, and then 3 all the way to the rear without crossing, it sounds retarded as its not even (ie all 6).

So the cross-over lets this occur and giving it a good sound

That said, i had a ZJ fairlane many years ago no balance pipe and it sounded good.

Yep, it's a GTR R32.

Ok, so it seems that I need to replace the existing mufflers with 2 decent big ones. The guy at the exhaust shop wanted to put in a single big muffler in the middle where the crossover is. Will that make the car sound wierd?

nice looking exh....are you running cats? (i found one cat was enough in addition to a shitty cannon to get my 26 quiet enough to go over the pits) otherwise some chambered mufflers somewhere in the middle will do the job.

sir racer; I had the same issue and ended up going with a custom made 4" muffler.... couldnt find a 3.5" anywhere (3.5" thin wall stainless is not an easy thing to find either - i ended up paying double for a 3.5" bend what i coudl get a 3" one for, sort off explains the lack of local 3.5" mufflers also)- cheaper in the end to go 4" if there was the room

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

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...