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Omega Help Area => Omega General Help => Topic started by: TheBoy on 13 September 2011, 18:04:08

Title: Eternal Exhausts - backbox
Post by: TheBoy on 13 September 2011, 18:04:08
If I were to put an Eternal exhaust on my 3.2 Elite, could I use the single outlet (ie, 2.5) backbox instead of twin outlet (ie 3.0)?

Also, I assume the prefacelift and facelift exhausts are the same on the V6, ignoring that the prefacelift backboxes are slightly shorter...
Title: Re: Eternal Exhausts - backbox
Post by: dbug on 13 September 2011, 19:09:49
Would guess so Jaime - I had to fit a twin outlet box on the 2.5 Estate due to non availability of single outlet box at the time - fitted ok with minor tweak to one of the hangers :y

Long as its a saloon back box for yours as Estate & Saloon back boxes different.
Title: Re: Eternal Exhausts - backbox
Post by: RobG on 13 September 2011, 19:16:15
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If I were to put an Eternal exhaust on my 3.2 Elite, could I use the single outlet (ie, 2.5) backbox instead of twin outlet (ie 3.0)?

Also, I assume the prefacelift and facelift exhausts are the same on the V6, ignoring that the prefacelift backboxes are slightly shorter...
Correct
Title: Re: Eternal Exhausts - backbox
Post by: albitz on 13 September 2011, 19:16:55
I fitted a twin outlet rear box from a 3.2 on my 2.5, so it should be the same the other way round. :y
Title: Re: Eternal Exhausts - backbox
Post by: RobG on 13 September 2011, 19:17:47
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I fitted a twin outlet rear box from a 3.2 on my 2.5, so it should be the same the other way round. :y
Goes without saying really :P :P
Title: Re: Eternal Exhausts - backbox
Post by: albitz on 13 September 2011, 19:19:45
Well, he did ask. ::) :P
Title: Re: Eternal Exhausts - backbox
Post by: RobG on 13 September 2011, 19:24:28
But my reply posted before yours :P ;D
Title: Re: Eternal Exhausts - backbox
Post by: TheBoy on 13 September 2011, 19:44:48
No restriction to flow using single outlet?
Title: Re: Eternal Exhausts - backbox
Post by: albitz on 13 September 2011, 19:47:55
Possibly. Mine certainly lets more noise flow out the back than the single outlet did. A bit too much if Im honest. :-/
Title: Re: Eternal Exhausts - backbox
Post by: tunnie on 13 September 2011, 19:50:19
Interesting question!

Considering quite a lot of power does come from the exhaust, flow is important.

But would a single pipe make that much of a difference? What if it was one pipe but then split into two in a stainless tip?
Title: Re: Eternal Exhausts - backbox
Post by: hotel21 on 13 September 2011, 20:01:58
Dunno about a pukka twin outlet box (working correctly, that is) compared to a 2.5 single.

But do know that fitting a shiney new Irmscher twin outlet to my estate made a mahoosive difference, given that the one it replaced had a collapsed pipe on one side.

Remember checking it at the lakes and the fuel trims?  All sorted now....   ;)
Title: Re: Eternal Exhausts - backbox
Post by: TheBoy on 13 September 2011, 21:37:46
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Dunno about a pukka twin outlet box (working correctly, that is) compared to a 2.5 single.

But do know that fitting a shiney new Irmscher twin outlet to my estate made a mahoosive difference, given that the one it replaced had a collapsed pipe on one side.

Remember checking it at the lakes and the fuel trims?  All sorted now....   ;)
Something was wrong with your old backbox IIRC, only getting gases from one pipe?

Title: Re: Eternal Exhausts - backbox
Post by: twiglet on 13 September 2011, 21:45:28
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Possibly. Mine certainly lets more noise flow out the back than the single outlet did. A bit too much if Im honest. :-/

You're not kidding! The last time you came to mine, I heard you coming from the next village!! I thought you'd dropped in a V8!!

I think it sounds excellent!! :y
Title: Re: Eternal Exhausts - backbox
Post by: TheBoy on 13 September 2011, 21:48:59
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Possibly. Mine certainly lets more noise flow out the back than the single outlet did. A bit too much if Im honest. :-/

You're not kidding! The last time you came to mine, I heard you coming from the next village!! I thought you'd dropped in a V8!!

I think it sounds excellent!! :y
Nah, try TheDaddy's spare exhaust. That's load ;D
Title: Re: Eternal Exhausts - backbox
Post by: YZ250 on 13 September 2011, 22:19:51
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If I were to put an Eternal exhaust on my 3.2 Elite, could I use the single outlet (ie, 2.5) backbox instead of twin outlet (ie 3.0)?

Also, I assume the prefacelift and facelift exhausts are the same on the V6, ignoring that the prefacelift backboxes are slightly shorter...

Curiously, most people go the other way. Twins on to a 2.5 to make it look like a 3.0 for the pose factor. I know i did when I had my 2.5 elite.
So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Title: Re: Eternal Exhausts - backbox
Post by: albitz on 13 September 2011, 22:31:29
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Quote
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Possibly. Mine certainly lets more noise flow out the back than the single outlet did. A bit too much if Im honest. :-/

You're not kidding! The last time you came to mine, I heard you coming from the next village!! I thought you'd dropped in a V8!!

I think it sounds excellent!! :y
Nah, try TheDaddy's spare exhaust. That's load ;D

And an MOT failure iirc. ;)
Ive decided I think I would prefer the quieter standard exhaust (god Im getting old) a week after I sold Guffer a virtually brand new standard cats back system. ::) ;D
Title: Re: Eternal Exhausts - backbox
Post by: feeutfo on 14 September 2011, 00:44:57
Seem to remember master saying twin pipe exit was purely for show....  :-/
Title: Re: Eternal Exhausts - backbox
Post by: kcl on 14 September 2011, 10:31:46
Twin exit for show only. It is so far from the engine and two mufflers in between so it will have no effect on the flow of exhaust gases  :y And as said, will fit both ways, twin to replace single and vice versa, saloon and estate being different.
Title: Re: Eternal Exhausts - backbox
Post by: TheBoy on 14 September 2011, 19:06:33
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X
Title: Re: Eternal Exhausts - backbox
Post by: VXL V6 on 14 September 2011, 21:08:47
Believe they do sell the twin outlet backbox, it's just not advertised on evilbay. TheDaddy did send me the information on how to order it, seems to be the usual 'ask seller a question' and wait a week for an answer situation though....
Title: Re: Eternal Exhausts - backbox
Post by: YZ250 on 14 September 2011, 21:40:47
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

I regret not discing off the three little tacks of weld that held the original stainless tailpipes on. They may have come in useful to somebody as finishers on an eternal system. Is it an option in your case? (using 3.0 backbox)  :-/
Title: Re: Eternal Exhausts - backbox
Post by: TheBoy on 14 September 2011, 22:15:44
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

I regret not discing off the three little tacks of weld that held the original stainless tailpipes on. They may have come in useful to somebody as finishers on an eternal system. Is it an option in your case? (using 3.0 backbox)  :-/
Possibly
Title: Re: Eternal Exhausts - backbox
Post by: Kevin Wood on 15 September 2011, 00:16:35
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

Do what I did and get a pair of chavvy trim pieces, one for each pipe. :y
Title: Re: Eternal Exhausts - backbox
Post by: tunnie on 15 September 2011, 10:54:11
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

Do what I did and get a pair of chavvy trim pieces, one for each pipe. :y

Any pictures Kevin?
Title: Re: Eternal Exhausts - backbox
Post by: Kevin Wood on 15 September 2011, 11:03:48
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

Do what I did and get a pair of chavvy trim pieces, one for each pipe. :y

Any pictures Kevin?

Erm.. Well, one of them fell off the other day due to a failed jubilee clip and is in the boot.  :-[

Will see what I can do later.
Title: Re: Eternal Exhausts - backbox
Post by: tunnie on 15 September 2011, 11:06:04
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So, either you've got a single outlet back box kicking around or you want people to think it's a 2.5 and then leave them standing off the lights.  ;D ;D
Alternatively, maybe that's all eternal have now.  :-/

Regards
Alan
Or, it could be as they dont sell facelift backboxes, I need to fit a chavvy trimpiece  :-X

Do what I did and get a pair of chavvy trim pieces, one for each pipe. :y

Any pictures Kevin?

Erm.. Well, one of them fell off the other day due to a failed jubilee clip and is in the boot.  :-[

Will see what I can do later.

Going for the full chav effect then  ;D
Title: Re: Eternal Exhausts - backbox
Post by: zirk on 15 September 2011, 15:06:34
The exhaust muppets fitted a single pipe exit on my 3.0 MV6 a few years back to get me through the Mot, I personally thought it did restrict my top torque, so wasn't long after I changed it for a Twin, probably didn't feel much different, if Im honest but made me feel better.

 :-/