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 Exhaust gains query

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Guest
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Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 20:36

Mikeblobsti wrote:
When I went from 2.5 to 3" the turbo seemed to spool quicker and definitely a increase in power, get a nice deep rumble from a full 3" too if you like that sort of thing Cool

Nice bit of exhaust porn there Mario lol! 
Well that's just the headers mate - you'll also need a new set of ear drums with yours Mike!!! lol! 
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hardy172

hardy172

Posts : 2938
Join date : 2010-03-14
Age : 38
Location : Durham & Costa Del Consett

Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 20:40

Jonny Gav wrote:
byers wrote:
Hardy was 397 on a 2.5"
Are you sure about the power output?

A true 3" exhaust will cause more of a restriction at high rpm and high gas flow, this will result in better cylinder filling at the engine as the engine can get rid of more waste exhaust gas leaving more room in the cylinder for more air and petrol, this will result in more power.
After my last map with Andy F he gave a figure 396 but I had a 3" nur spec not 2.5"

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Mikeblobsti

Mikeblobsti

Posts : 967
Join date : 2012-05-01
Age : 37
Location : Spenny

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 20:43

Haha Mario it's not too bad on the inside mate..... Or maybe I already need new set of ear drums Razz
These cars are meant to be loud IMO though, they seem to suit it some how without being a boy racer car!
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Guest
Guest



Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:08

Mikeblobsti wrote:
Haha Mario it's not too bad on the inside mate..... Or maybe I already need new set of ear drums Razz
These cars are meant to be loud IMO though, they seem to suit it some how without being a boy racer car!
Mate I love your exhaust I love you I love you and I would love to put one on - just not sure the wife & 3 kids would appreciate it when I leave for work at 6.30am every morning - fook the neighbours though!
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Jonny Gav
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Jonny Gav

Posts : 6837
Join date : 2010-03-12
Age : 49
Location : Durham

Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:16

maca wrote:
Jonny Gav wrote:
A true 3" exhaust will cause less of a restriction at high rpm and high gas flow, this will result in better cylinder filling at the engine as the engine can get rid of more waste exhaust gas leaving more room in the cylinder for more air and petrol, this will result in more power.
Would it not cause less of a restriction at high rpm and high gas flow? scratch

Just thinking with it being of greater diameter (you going to show me up now aint ya Laughing )
You are 100% correct mate, that's why I shouldn't post and take a shit at the same time, I can only concentrate on one thing at a time lol! 

I have corrected my error.
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byers

byers

Posts : 3378
Join date : 2011-02-19
Age : 41
Location : Hpool

Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:22

hardy172 wrote:
Jonny Gav wrote:
byers wrote:
Hardy was 397 on a 2.5"
Are you sure about the power output?

A true 3" exhaust will cause more of a restriction at high rpm and high gas flow, this will result in better cylinder filling at the engine as the engine can get rid of more waste exhaust gas leaving more room in the cylinder for more air and petrol, this will result in more power.
After my last map with Andy F he gave a figure 396 but I had a 3" nur spec not 2.5"

Mate it was a 2.5 ya bell end I measured it !!! The down pipe !!!
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hardy172

hardy172

Posts : 2938
Join date : 2010-03-14
Age : 38
Location : Durham & Costa Del Consett

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:32

You sure mate?? Me and your lass are always laughing after I've banged her about how you keep telling her yours is 8" long but she knows its only 4" lol! so not sure weather your handy with a tape measure Wink
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byers

byers

Posts : 3378
Join date : 2011-02-19
Age : 41
Location : Hpool

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:57

Shhhhhhh I no all your secrets

__________________________________________________
"Speed has never killed anyone; suddenly becoming stationary...that's what gets you." - Jeremy Clarkson
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Tizer



Posts : 565
Join date : 2012-05-27
Age : 33
Location : Northumberland

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 21:59

So what's a good 3inch system go for ?

Also how many are true full 3inch systems all the way though ?
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StickT

StickT

Posts : 2607
Join date : 2012-07-26

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 22:02

I have a full true 3" exhaust, its a cheapie but is performing well on mine, not too loud either.
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hardy172

hardy172

Posts : 2938
Join date : 2010-03-14
Age : 38
Location : Durham & Costa Del Consett

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 22:05

byers wrote:
Shhhhhhh I no all your secrets
lol!
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byers

byers

Posts : 3378
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Location : Hpool

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 22:30

I have a 3" revolution system

__________________________________________________
"Speed has never killed anyone; suddenly becoming stationary...that's what gets you." - Jeremy Clarkson
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Mikeblobsti

Mikeblobsti

Posts : 967
Join date : 2012-05-01
Age : 37
Location : Spenny

Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 22:43

Mines a 3" miltek downpipe and full 3"" nur spec r system, the first flage on the nur spec was originally 2.5 but changed it to 3", not sure if just just a flange would affect much but did it anyway!  Loud without the bung but nice a quiet and very similar to prodrive back box sound with bung in!  Would probably go full miltek if I ever changed.


Last edited by Mikeblobsti on Wed 13 Nov - 22:51; edited 1 time in total
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Guest
Guest



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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyWed 13 Nov - 22:47

Here's a full 3 inch Revolution Turbo Back system for £250 Tizer

http://bbs.scoobynet.com/subaru-parts-451/989157-revolution-3-turbo-back-system.html
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andyden71

andyden71

Posts : 2854
Join date : 2010-11-11
Age : 48
Location : Bishop Auckland

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 8:18

That similar that on mine but I'm has a 2.5 standard center section and down pipe I'm after changing the 2.5 bits for the 3inch
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maca

maca

Posts : 3232
Join date : 2010-05-30
Age : 36
Location : Easington Lane

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 9:15

Jonny Gav wrote:

that's why I shouldn't post and take a shit at the same time, I can only concentrate on one thing at a time lol! 

Shocked as long as you enjoyed ya shit then its ok Laughing
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maca

maca

Posts : 3232
Join date : 2010-05-30
Age : 36
Location : Easington Lane

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 9:37

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Jonny Gav
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Jonny Gav

Posts : 6837
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Age : 49
Location : Durham

Exhaust gains query  - Page 2 Empty
PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 22:32

maca wrote:
Think this would be any good?

http://www.ebay.co.uk/itm/JAPSPEED-SUBARU-IMPREZA-CLASSIC-GC8-3-BORE-TURBO-BACK-FULL-DECAT-RACE-EXHAUST-/160762051193?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item256e2a3a79
Yeah but not at that price, that is a Toyosport system, you can get that system for £200.
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Jonny Gav
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Jonny Gav

Posts : 6837
Join date : 2010-03-12
Age : 49
Location : Durham

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 22:36

2nd hand one for sale in Hartlepool- eBay 141113934067
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andyden71

andyden71

Posts : 2854
Join date : 2010-11-11
Age : 48
Location : Bishop Auckland

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PostSubject: Re: Exhaust gains query    Exhaust gains query  - Page 2 EmptyThu 14 Nov - 23:58

Johnny will that fit my bugeye ?
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