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Educated Guess At The Final Tune Results

Nismo 3.2ish
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jangles Veteran

jangles

Posted
Posted

I reckon close may be about the best outcome ?

But when I am ready I will ask whoever is doing it, what should I do ?

Well, Racepace could make the catback part, workshop could make the turbo to cat...

Unless they can offer you a queitish freeflowing exhaust.

I don't know personally, I've got a straight through 4", Have always thought about RP 4" since piggaz and nismoid used to talk about them.

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XKLABA
XKLABA

They lock them so no one can see their tunes, they did the same thing to my FC and Scott was able to get around it I would have expected more down low then that, you need to get someone else to tune

Nismo 3.2ish
Nismo 3.2ish

Here is the only one I have so far, boring

Nismo 3.2ish
Nismo 3.2ish

It car came up great, only trouble is I have to wear sunnies outside the car, great job but mow I have to try and keep it looking the same , pain in the arse , lol Had a quick run when the car wa

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GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

I don't aim for legal anymore when it comes to exhaust. A friend of mine swapped back to the standard system in his S15 and only passed by 1dB.

bit of a joke really.

Rules I follow:

aim for quiet enough to not arouse police attention while idling at an RBT

Quiet enough to not wake the neighbors as they can report you to EPA using the new app

If you can't chat to your passenger while idling in traffic or cruising at 120 it's too loud.

Don't drive in the city on Friday or Saturday nights. Don't be so stupid as to cruise through Kings Cross

most importantly:

No. f**king. Cannons.

It is possible to have a quiet system that makes good power. External wastegate vented to atmosphere will help tremendously.

just out of curiosity would a thick walled exhaust pipe be quieter?

Except external gates vented to atmos are even more illegal then being too loud.. And they sound gheyyy as f**k
  • Like 2
AngryRB Grand Master

AngryRB

Posted
Posted (edited)

put a baby seat in the back pete, you can use it to carry beer home and stuff so it still has a purpose lol.. a person with babies doesn't modify car cause that's not responsible :laugh:

works for me, I think

Edited by AngryRB
  • Like 1
luke gtr Grand Master

luke gtr

Posted
Posted

I don't aim for legal anymore when it comes to exhaust. A friend of mine swapped back to the standard system in his S15 and only passed by 1dB.

bit of a joke really.

Rules I follow:

aim for quiet enough to not arouse police attention while idling at an RBT

Quiet enough to not wake the neighbors as they can report you to EPA using the new app

If you can't chat to your passenger while idling in traffic or cruising at 120 it's too loud.

Don't drive in the city on Friday or Saturday nights. Don't be so stupid as to cruise through Kings Cross

most importantly:

No. f**king. Cannons.

It is possible to have a quiet system that makes good power. External wastegate vented to atmosphere will help tremendously.

just out of curiosity would a thick walled exhaust pipe be quieter?

this except the screamer(i dont like gate).

My 4" is fairly quiet.

Have had cops cruise behind me and keep moving.

It's not legal(i think it would be close ish.)

And i have mild steel, apparently quieter than stainless(was told by exhaust shop).

  • Like 1
Nismo 3.2ish Grand Master

Nismo 3.2ish

Posted
  • Author
Posted

this except the screamer(i dont like gate).

My 4" is fairly quiet.

Have had cops cruise behind me and keep moving.

It's not legal(i think it would be close ish.)

And i have mild steel, apparently quieter than stainless(was told by exhaust shop).

You run 4" all the way , dump to tip, what Cat and Muffler do you have, I have no idea what mine is, I asked for a quiet one and they had a mob custom a 3.5" stainless one for me , but did shit all with the dump and cat ?

Have you had yours tested for the DB level ?

I still think a quietish exhaust can still sound OK :/ but I still love a good GROWL :)

What did you have on before the 4" ?

XKLABA Grand Master

XKLABA

Posted
Posted

I don't aim for legal anymore when it comes to exhaust. A friend of mine swapped back to the standard system in his S15 and only passed by 1dB.

bit of a joke really.

Rules I follow:

aim for quiet enough to not arouse police attention while idling at an RBT

Quiet enough to not wake the neighbors as they can report you to EPA using the new app

If you can't chat to your passenger while idling in traffic or cruising at 120 it's too loud.

Don't drive in the city on Friday or Saturday nights. Don't be so stupid as to cruise through Kings Cross

most importantly:

No. f**king. Cannons.

It is possible to have a quiet system that makes good power. External wastegate vented to atmosphere will help tremendously.

just out of curiosity would a thick walled exhaust pipe be quieter?

Nice, that is basiclly how i look at it to

And no, thick wall is louder where it matters, out the back as the noise can not escape till it exits exhaust, thin wall or mild steel wrapped in heat wrap is quietist and the reason i went mild steel for my 4", just waiting for gearbox to arrive to finsih wrapping it

I had a Jap 80mm catback before this and this is a lot quieter, good quality mufflers make a big difference, Windsor Exhaust did mine and they custom made the mid muffler for me

luke gtr Grand Master

luke gtr

Posted
Posted

You run 4" all the way , dump to tip, what Cat and Muffler do you have, I have no idea what mine is, I asked for a quiet one and they had a mob custom a 3.5" stainless one for me , but did shit all with the dump and cat ?

Have you had yours tested for the DB level ?

I still think a quietish exhaust can still sound OK :/ but I still love a good GROWL :)

What did you have on before the 4" ?

i can't remember having it tested, but fairly quiet.

Just prior to this, had a stainless twin 3 with catch ceramic cats in single 4.

Very noisy.

Approx test level of 105db.

The cat in currently using is a 5" metal cat, don't know brand sorry.

I will try and get a pic of the mufflers today.

They are branded, just can't remember what brand.

And I'd estimate test would show approx 98-100db.

I love that you can still just hear the wastegate open.

Just....

luke gtr Grand Master

luke gtr

Posted
Posted

Nice, that is basiclly how i look at it to

And no, thick wall is louder where it matters, out the back as the noise can not escape till it exits exhaust, thin wall or mild steel wrapped in heat wrap is quietist and the reason i went mild steel for my 4", just waiting for gearbox to arrive to finsih wrapping it

I had a Jap 80mm catback before this and this is a lot quieter, good quality mufflers make a big difference, Windsor Exhaust did mine and they custom made the mid muffler for me

Windsor exhaust also made mine, not custom mufflers, but still very happy with the work.

Well priced too.

They make car-truck exhausts, so 4" isn't that big for them.

Blackkers Experienced

Blackkers

Posted
Posted

this except the screamer(i dont like gate).

My 4" is fairly quiet.

Have had cops cruise behind me and keep moving.

It's not legal(i think it would be close ish.)

And i have mild steel, apparently quieter than stainless(was told by exhaust shop).

Cool. Yeah my logic behind the screamer pipe is that if you're on boost near a highway patrol car it won't matter whether your waste gate is plumbed in. I just like the idea of an extra 2" Exhaust to help with flow when you need it.

Although it would suck to get epa'd and have one extra thing to worry about

  • Like 1
Duncan Grand Master

Duncan

Posted
Posted

umm no.

basically, modifying cars aren't legal. pretty much everything changed on your car, my car and the car of everyone else on these forums have illegal mods.

what you need is not attracting attention.....not too loud, careful where and when you go, and don't drive like a dickhead.

  • Like 1
Nismo 3.2ish Grand Master

Nismo 3.2ish

Posted
  • Author
Posted

umm no.

basically, modifying cars aren't legal. pretty much everything changed on your car, my car and the car of everyone else on these forums have illegal mods.

what you need is not attracting attention.....not too loud, careful where and when you go, and don't drive like a dickhead.

Shit!

Thats a worry :(

AngryRB Grand Master

AngryRB

Posted
Posted (edited)

plenty of 8second VL turbo's on the youtube that are quiet enough, only noisy RB's seem to be ones without proper mufflers on

this is daily driven 10second R34 that's quiet enough

https://youtu.be/0OgaQleny1M

Edited by AngryRB
AngryRB Grand Master

AngryRB

Posted
Posted (edited)

I've seen that Mercury motorsport R34 in person, its driven daily and I doubt the cops would give it any attention due to sound outputs..

A lot of them are only noisy when at full throttle/revs, driven normal they are quiet enough, its pretty logical

Edited by AngryRB

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