Rb26 Aftermarket Exhaust

[GD51LA]

what is the difference between these three pipe sizes?

much power to gain from 3" to 4"?

sound?

steel type?

[Nee-san]

what is the difference between these three pipe sizes?

much power to gain from 3" to 4"?

sound?

steel type?

Bout an 1" to an 1" 1/2 Lol.. sorry bro

I have a 4" HKS on mine, 330rwkw no restriction should make a heap more soon to.

as a rough guide

3" ~ 300kw

3.5"~350kw

4"~400kw+

Sort of real rough guide do a search bro i think R31Nismoid has gone over it in a few threads.

Cheers,

Mitch.

[(OO)SKYLINE(OO)]

Bout an 1" to an 1" 1/2 Lol.. sorry bro

I have a 4" HKS on mine, 330rwkw no restriction should make a heap more soon to.

as a rough guide

3" ~ 300kw

3.5"~350kw

4"~400kw+

Sort of real rough guide do a search bro i think R31Nismoid has gone over it in a few threads.

Cheers,

Mitch.

Yep, that's pretty much what R31Nismoid will say.

[R31Nismoid]

So GD51LA - More so depends on the car setup.

Changing exhaust size from 3" to 4" won't just "magically" make more power if you have factory turbos etc.

[WARLORD]

3 1/2 is a good start even if you dont go wild on turbos,get a good cat as well.

[N1GTR]

455rwkw, 75/80mm exhaust.

It's got nothing left to give, replacement being made right now.

Sounds decent though, but that's mainly the cams

[Nee-san]

455rwkw, 75/80mm exhaust.

It's got nothing left to give, replacement being made right now.

Sounds decent though, but that's mainly the cams

Link Doesnt work ?

Works now , sounds tough !

Edited April 26, 2010 by Nee-san

[GD51LA]

ok i will have a look for the nismoid thread

[R31Nismoid]

455rwkw, 75/80mm exhaust.

It's got nothing left to give, replacement being made right now.

Sounds decent though, but that's mainly the cams

Be interesting to see what happens when you change it without even a retune

[N1GTR]

Be interesting to see what happens when you change it without even a retune

Yeah it will.

I'll do one power run before adding boost just to see what it does

[R31Nismoid]

Excellent

[NYTSKY]

I gained 15rwkw going from a 3" to a 3 1/2" it was the first pull before a retune.

348-363rwkw

[GD51LA]

what about hks dump pipes? are they worth the very extra cash?

what do you think of x force? has anyone used them for their exhaust system?

what is good and reasonably price exhaust brand?

[R31Nismoid]

What setup do you have mate?

Full list up of the mods will make it far easier to give you overall advice rather than just asking for exhaust size without knowing what you actually need to achieve

[N1GTR]

My cat back is xforce. Yeah, huge suprise it hasn't been a restriction yet.

Tomei dumps. Hks front pipes.

As Ash said, list everything first

[Piggaz]

Steve. Did you ever get a unigroup tune before the 3 litre? we have *almost* the same setup apart from the the extra 260 cc. it would be interesting to see the results.

[GD51LA]

not too many too list. the car is completely standard.

i dont want too many mods. in the future i might go to N1 tubos with all the supporting mods, but at the moment i just want exhaust.

[N1GTR]

not too many too list. the car is completely standard.

i dont want too many mods. in the future i might go to N1 tubos with all the supporting mods, but at the moment i just want exhaust.

Stock? And here we are thinking it's got a whole catalogue thrown at it.

Leave the stock dumps until you change turbos.

For now, get some good quality front pipes (I have hks, they're good), a high flowing cat (or none, up to you), and a kakimoto catback. It will sound SO good and be enough flow for now, or for later when you change to steel wheel turbos.

You may have people saying to get a 3.5" catback but I don't see why, when the front pipes merge to a 3" merge and your car is stock.

[N1GTR]

Steve. Did you ever get a unigroup tune before the 3 litre? we have *almost* the same setup apart from the the extra 260 cc. it would be interesting to see the results.

Yeah actually, he spent 45 mins with the microtech the night before driving it to Victoria due to a faulty ecu another forum member sold me.

Yavuz wasn't happy with the tune but he said it's enough power for a weekend of fun but super safe so nothing will happen. On 98, 371rwkw 18psi. No mechanical changes the next tune was 403rwkw, maxed injectors changed to ID2000's and then tuned as is. Wait until my new exhaust is done, I'll be straight back to Yavuz for another tune with more boost etc

Edit; sorry, that was 3L. No one in Sydney ever tuned it while it was 2.6L, I misread your question, sorry. Also it's an 87mm bore, so a tad more than 260cc, but who cares it's splitting hair. Sorted out your pipes?

[R31Nismoid]

Stock? And here we are thinking it's got a whole catalogue thrown at it.

Leave the stock dumps until you change turbos.

For now, get some good quality front pipes (I have hks, they're good), a high flowing cat (or none, up to you), and a kakimoto catback. It will sound SO good and be enough flow for now, or for later when you change to steel wheel turbos.

You may have people saying to get a 3.5" catback but I don't see why, when the front pipes merge to a 3" merge and your car is stock.

haha, yes same, i was expecting a longer list of mods

Pretty much as you said Steve.

Although i would just get 3.5" from the outset personally. Once day you might decide to get slightly bigger turbos etc and a tad larger exhaust could offer benefits.

Certainly no need for a 4" unless you are planning on a 400rwkw+ sorta build.

Also some merge's actually go to 3.5", i know the trust ones do... so certainly not all front pipes end up 3" @ the merge.