Ozzie st150 exhaust

Post any performance modifications or questions here

Moderator: Fiesta ST Moderators

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Ozzie st150 exhaust

Postby rositano » Wed Mar 30, 2016 1:21 pm

Hi guys,

I realise that much has been spoken about the 'ideal exhaust'. I've read as much as I could of different exhaust setups, but none exactly like mine (I could be wrong). Was wondering whether my setup is holding me back with regards to too much/little back pressure?

I've attached an image below of my current setup: 4-2-1 swr headers, high flow cat (200 cell), 57mm straight-through resonator, and the rest is stock.
I've kept the cat because here in Australia it's a requirement, is this the case in South Africa?

Thanks in advanced.
The attachment exhaust.jpg is no longer available
The attachment side.jpg is no longer available

exhaust.jpg

+
User avatar
Posts: 8223
Joined: Thu Jul 06, 2006 11:03 am
Location: East Rand
Make: 1L Ford
Model: 2L Ford
Type: 3L Ford
Year: 1990

Re: Ozzie st150 exhaust

Postby V6 Capri » Thu Mar 31, 2016 9:56 am

Not a lot of ST150 members left on the forum.
I am sure Stu will comment when he checks in again? He has done some research on the exhaust side of things with ST150's.
1964 Ford Anglia 997cc
1972 Ford Capri 3000GT
1994 Ford Escort Cosworth (replica)
1996 Ford Escort 1.6 (plus VAT)

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Thu Mar 31, 2016 10:27 am

That makes sense!

The st150 is a good 10 years old now i guess.
A lot of the exhaust related posts that I've read were stu's....he appears to be the exhaust guru!

Thanks

+
User avatar
Posts: 391
Joined: Sat Dec 08, 2012 7:44 pm
Location: Alberton
Make: Ford
Model: Fiesta
Type: ST 150
Year: 2007

Re: Ozzie st150 exhaust

Postby KnightLion » Thu Mar 31, 2016 11:12 am

No the Cat isn't so much an issue in SA, from what I have read and learned is 52" is ideal for the ST150 running that setup myself and have no issue with it
07 Fiesta ST
60mm TB
Motorcad SRI
SWR Branch + Powerflow exhaust
Strutbrace
Triple R front splitter and rear diffuser
Eibach Lower Springs
Poly Mount

+
User avatar
Posts: 1182
Joined: Tue Oct 19, 2010 2:56 pm
Location: Cape Town
Make: Ford
Model: Fiesta
Type: ST
Year: 2014

Re: Ozzie st150 exhaust

Postby Razortjie » Thu Mar 31, 2016 11:14 am

I ran 57mm pipe from the ceramic coated header, no cat, small box just before the rear axle and a 500mm long x 100mm wide round rear box.

Made decent power and didn't sound bad... but I am at sea level. :)

Just remember a lot of the exhaust posts on this forum might be related to the guys in JHB... ie > 1000m above sea level.
They tend to prefer smaller diameter pipes due to the altitude.
2014 Fiesta ST
ex: 2013 Polo GTI - Stock 14.3 @ Killarney - 139kw 259nm @ Top End
ex: 2009 Fiesta ST190+ - 142.5kw 225nm @ Dynotech

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Thu Mar 31, 2016 11:28 am

KnightLion wrote:No the Cat isn't so much an issue in SA, from what I have read and learned is 52" is ideal for the ST150 running that setup myself and have no issue with it


Yeh, I thought so. A lot of guys on this forum mention they have decats. Unfortunately (or fortunately, depending which way you look at it) here in Oz its a legal requirement.

By 52" pipe do you mean 52mm?

+
User avatar
Posts: 391
Joined: Sat Dec 08, 2012 7:44 pm
Location: Alberton
Make: Ford
Model: Fiesta
Type: ST 150
Year: 2007

Re: Ozzie st150 exhaust

Postby KnightLion » Thu Mar 31, 2016 11:30 am

Lol my bad yes 52mm
07 Fiesta ST
60mm TB
Motorcad SRI
SWR Branch + Powerflow exhaust
Strutbrace
Triple R front splitter and rear diffuser
Eibach Lower Springs
Poly Mount

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Thu Mar 31, 2016 11:31 am

Razortjie wrote:I ran 57mm pipe from the ceramic coated header, no cat, small box just before the rear axle and a 500mm long x 100mm wide round rear box.

Made decent power and didn't sound bad... but I am at sea level. :)

Just remember a lot of the exhaust posts on this forum might be related to the guys in JHB... ie > 1000m above sea level.
They tend to prefer smaller diameter pipes due to the altitude.


That's interesting. I've noticed many guys mentioning altitude as a factor! Does it make that much of a difference if one was to stick with the stock 54mm if at sea level? Is it affecting high end hp or low end torque?

Thanks

+
User avatar
Posts: 1182
Joined: Tue Oct 19, 2010 2:56 pm
Location: Cape Town
Make: Ford
Model: Fiesta
Type: ST
Year: 2014

Re: Ozzie st150 exhaust

Postby Razortjie » Thu Mar 31, 2016 11:42 am

rositano wrote:
Razortjie wrote:I ran 57mm pipe from the ceramic coated header, no cat, small box just before the rear axle and a 500mm long x 100mm wide round rear box.

Made decent power and didn't sound bad... but I am at sea level. :)

Just remember a lot of the exhaust posts on this forum might be related to the guys in JHB... ie > 1000m above sea level.
They tend to prefer smaller diameter pipes due to the altitude.


That's interesting. I've noticed many guys mentioning altitude as a factor! Does it make that much of a difference if one was to stick with the stock 54mm if at sea level? Is it affecting high end hp or low end torque?

Thanks



Probably depends how far you are modded or are going to mod if it is worth changing your setup.
Remember, we talking about tiny gains on the NA motor.

I was running the cossie cams, 60mm throttle body, UDP, k&n SRI, software, etc.
If less modded, probably very little difference between full exhaust and stock rear section.

At sea level, I would definitely recommend going 57mm all the way through if you chasing that extra 1-2kw.
The cars with full exhaust made more power at the dyno days way back when :)
2014 Fiesta ST
ex: 2013 Polo GTI - Stock 14.3 @ Killarney - 139kw 259nm @ Top End
ex: 2009 Fiesta ST190+ - 142.5kw 225nm @ Dynotech

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Thu Mar 31, 2016 11:59 am

Razortjie,

That's a tight setup you've got there! I don't plan on going that far for the time being.....famous last words! lol
I currently only have:

- simota enclosed sri with dual cod air feed
- swr 4-2-1 headers
- high flow cat
- 57mm resonator after cat
- bluefin stage 2

My short term goal is to get the exhaust right. My gut feeling is that it's a little restricted, and robbing me of a few ponies, but I know that if i go 57mm all the way, add a high flow rear muffler then the sound goes up....and that's another long discussion that I've seen many times before on the forum.

What's your exhaust sound like, volume-wise?

Thanks

+
Posts: 131
Joined: Fri Nov 06, 2015 7:41 am
Make: Ford
Model: Focus
Type: ST
Year: 2008

Re: Ozzie st150 exhaust

Postby YellowSTripes » Thu Mar 31, 2016 1:18 pm

rositano wrote:Hi guys,

I've kept the cat because here in Australia it's a requirement, is this the case in South Africa?

exhaust.jpg
side.jpg

rear.jpg


AUSSIE AUSSIE AUSSIE!!!! OI OI OI!!!

Cant believe this true ](*,) so all the Focus 225 down under sound like pop corn machines? :lol:

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Thu Mar 31, 2016 1:49 pm

Mr Wayne wrote:
rositano wrote:Hi guys,

I've kept the cat because here in Australia it's a requirement, is this the case in South Africa?

exhaust.jpg
side.jpg

rear.jpg


AUSSIE AUSSIE AUSSIE!!!! OI OI OI!!!

Cant believe this true ](*,) so all the Focus 225 down under sound like pop corn machines? :lol:


Ha ha ha!! Nice chanting!!

Legally, we need to have a cat, but of course heaps of guys don't. They just put one on when the car has to pass registration each year.

+
Posts: 131
Joined: Fri Nov 06, 2015 7:41 am
Make: Ford
Model: Focus
Type: ST
Year: 2008

Re: Ozzie st150 exhaust

Postby YellowSTripes » Fri Apr 01, 2016 9:08 am

rositano wrote:
Mr Wayne wrote:
rositano wrote:Ha ha ha!! Nice chanting!!

Legally, we need to have a cat, but of course heaps of guys don't. They just put one on when the car has to pass registration each year.


hahaha oh I see, kind of like half the guys on here with their mods and warranties :lol:

+
User avatar
Posts: 34
Joined: Fri Aug 07, 2015 4:43 am
Location: Sydney, Australia
Make: ford
Model: fiesta
Type: st 150
Year: 2007

Re: Ozzie st150 exhaust

Postby rositano » Fri Apr 01, 2016 11:36 am

Mr Wayne wrote:
rositano wrote:
Mr Wayne wrote:
rositano wrote:Ha ha ha!! Nice chanting!!

Legally, we need to have a cat, but of course heaps of guys don't. They just put one on when the car has to pass registration each year.


hahaha oh I see, kind of like half the guys on here with their mods and warranties :lol:


Exactly!! Nothing like living on the edge!

Mr Wayne, do you much about st150 back boxes? Noticed a lot of guys in SA have the milltek exhausts with a free flowing back box, but I recall Stu saying that it isn't a straight-through as such. I'm keen to buy a local brand of back box which is similar in design to the milltek, but without the price tag (shipping is a [email protected]!)

Thanks

+
Posts: 131
Joined: Fri Nov 06, 2015 7:41 am
Make: Ford
Model: Focus
Type: ST
Year: 2008

Re: Ozzie st150 exhaust

Postby YellowSTripes » Tue Apr 05, 2016 8:22 am

quote]

Exactly!! Nothing like living on the edge!

Mr Wayne, do you much about st150 back boxes? Noticed a lot of guys in SA have the milltek exhausts with a free flowing back box, but I recall Stu saying that it isn't a straight-through as such. I'm keen to buy a local brand of back box which is similar in design to the milltek, but without the price tag (shipping is a [email protected]!)

Thanks[/quote]

I drive a 225 bud so I'm not to clued up on the 150, i will say that Stu has one of/if not the fastest 150 on SA roads at the moment so he is pretty much on point when it comes to the fiST!

Next

Return to Fiesta ST Performance Mods

Who is online

Users browsing this forum: No registered users and 1 guest