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Dual exhausts on my 380GT-Version #1
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Administrator
Posted 26/9/2011 18:52 (#13598)
Subject: Dual exhausts on my 380GT-Version #1



Frequent flyer Gold

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Location: An island off southern Tasmania.		Today I fitted a dual exhaust system to my 380GT.

I supplied all parts to the exhaust shop.


Parts used were...a second hand 380VRX oval tipped rear muffler and two rubber mounts and heat shield....all sourced from a wreck.

It took 3 hours to fabricate/bend the pipe work and to weld up the "Y" section at the rear as well as cutout the bumper infill section.



grand total cost.....$300 !

Exactly the same as the TMR kit...stock muffler and stock heat shield....and Thanks to TMR getting ADR compliance it is legal.


see attached photos....



(P9260126.JPG)



Attachments
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Attachments P9260126.JPG (590KB - 565 downloads)
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wsbtt
Posted 29/9/2011 08:10 (#13602 - in reply to #13598)
Subject: Re: Dual exhausts on my 380GT



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Location: Brisbane,qld		nice, did you notice any performance change at all?
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Administrator
Posted 29/9/2011 10:51 (#13603 - in reply to #13602)
Subject: Re: Dual exhausts on my 380GT



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Posts: 1093
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Location: An island off southern Tasmania.
wsbtt - 29/9/2011 08:10

nice, did you notice any performance change at all?




yes, I need to retune the mid to high range.
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chrisv
Posted 29/9/2011 16:47 (#13604 - in reply to #13603)
Subject: Re: Dual exhausts on my 380GT



Frequent flyer Bronze

Posts: 34
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Location: Gawler		Hi
Looks and sounds pretty much the same as my twin exhaust mod. I just finished it off with twin tips.
My first post!

Edited by chrisv 29/9/2011 16:49
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wsbtt
Posted 29/9/2011 16:59 (#13605 - in reply to #13603)
Subject: Re: Dual exhausts on my 380GT



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Location: Brisbane,qld
Administrator - 29/9/2011 10:51

wsbtt - 29/9/2011 08:10

nice, did you notice any performance change at all?




yes, I need to retune the mid to high range.
You still got the extractors on it
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wsbtt
Posted 29/9/2011 17:06 (#13606 - in reply to #13604)
Subject: Re: Dual exhausts on my 380GT



Frequent flyer Gold

Posts: 421
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Location: Brisbane,qld
chrisv - 29/9/2011 16:47

Hi
Looks and sounds pretty much the same as my twin exhaust mod. I just finished it off with twin tips.
My first post!
Sounds good, did you post a video on youtube?, good to see other members posting
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Administrator
Posted 9/10/2011 20:27 (#13628 - in reply to #13606)
Subject: Re: Dual exhausts on my 380GT



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Location: An island off southern Tasmania.		The bottom view....



(dual exhausts gt underneath view.JPG)



Attachments
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Attachments dual exhausts gt underneath view.JPG (170KB - 583 downloads)
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wsbtt
Posted 9/10/2011 23:38 (#13629 - in reply to #13628)
Subject: Re: Dual exhausts on my 380GT



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Location: Brisbane,qld		Nice job
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Godzilla
Posted 10/10/2011 23:14 (#13635 - in reply to #13598)
Subject: Re: Dual exhausts on my 380GT



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Looks good.

The main single feed pipe running under the car...

Your extractors, what is the output diameter?

Is the single running under the car big enough to handle the volume of the 2 headers?

Normally i see twin 2 1/4"to 2 1/2" headers into a single 3" back to twin 2 1/2".

Also investigate if the mufflers are straight through items, most but not all designs have baffles inside which clogs up the system.

Also forgot to mention, if your running headers make sure you use a metal substrate high flow cat, the normally used ceramic ones quickly crumble from the extra heat from a header conversion.

BTW nice twin outlets.
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firie
Posted 14/10/2011 14:28 (#13678 - in reply to #13598)
Subject: Re: Dual exhausts on my 380GT


Does the cost you quoted include the rear bumper bar insert, the GT has a single outlet or did you modify the existing insert.
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