ST150 exhaust and tuning advice

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ST150 exhaust and tuning advice

Postby heinrichlourens » Wed Jan 10, 2018 10:52 am

Hi all,

I recently bought my 2008 Fiesta ST150. It's still completely standard, and I'm looking to do some minor mods to make it stand out a bit. Obviously I am on a budget so can't go buying Milltek systems and dreamscience boxes etc...

Specifically I want to start off with stage 1, which I assume consists of CAI, Branch, Cat-Back exhaust and a chip or remap (not sure if you can just map these or if you need piggyback system like unichip)

So I'm looking for advice on which route to go as far as brands, where to take the car and where to tune it afterwards. As well as what gains I can expect. If any of you have done similar mods I'd love to hear what your feedback and experience is.

For CAI, I'll probably go K&N or BMC. Is it better on the ST to go with a cone and sillicone pipe or just a replacement panel filter? I remember on my 1.4 fiesta the cone took away some low end torque.

Then on the exhaust, I'm very particular when it comes to the sound of my car, any car in fact. So I want to get the exhaust right.
I assume the best way to go for performance is a branch, decat and cat-back system?

I love the pop & crackle these cars make with a nice exhaust fitted, so I definately want some pops & bangs when you change gear and play with the throttle ect..

I want it to sound aggressive, but not so loud that it becomes an issue as it's still my daily. And I want to limit drone and don't want that silly backdraft noise when the revs come down.

These vidoes are about the type of sound I would like to end up with.
https://www.youtube.com/watch?v=G0-d0BvUycw
https://www.youtube.com/watch?v=1hQ7AI4ePnc
https://www.youtube.com/watch?v=K3F_qQawfQQ
https://www.youtube.com/watch?v=fUeTbUDoRg4

And this is what I don’t want, that sharp sound when the revs come down…
https://www.youtube.com/watch?v=cBE3AbYQx1A


What would you guys recommend going for in terms of which branch, which cat-back, and where is the best place to go? Powerflow, Venom, Viper etc...?

And then finally on the dyno tuning after the mods have been done, where can I get this done? And is it just a re-map that is done or a piggyback system like unichip?


I've also recently seen the Omex rev limiter on a Fiesta on youtube. Looks like something nice to have and play around with and it can make you shoot some flames! Has anyone in SA had this fitted and what are your experiences?

I look forward to hearing from you guys soon!

Regards
Heinrich

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Re: ST150 exhaust and tuning advice

Postby Not_Sean » Thu Jan 11, 2018 5:23 am

hey man,

see if you can find my old build topic should be some good info on there, was a few years ago.

This was mine:
https://www.youtube.com/watch?v=N9tWLNUCud0
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Re: ST150 exhaust and tuning advice

Postby KnightLion » Thu Jan 11, 2018 1:22 pm

Hi

Firstly if you want a new branch and chip I would say SWR https://stevewyndhamracing.com/ but I see they aren't doing it anymore :/ maybe you can contact them and find out and for the rest of the exhaust Powerflow will be the best bet bare in mind that the ST150 is highly affected by back pressure but somewhere on this forum its been discussed at length but can't remember the post.
Depending on where you are situated I would not go for Cold air intake but rather short ram intake, if you are in the Gauteng or anywhere you get rains that can get a waterlevel as high as your car's undercarriage CAI "can" cause hydrolock which is bad.

But congrats on the Fezz it is a very nice car so much so that I will not be selling mine :)
07 Fiesta ST
60mm TB
Motorcad SRI
SWR Branch + Powerflow exhaust
Strutbrace
DRL Headlights + Leds
Triple R front splitter and rear diffuser
Eibach Lower Springs
Poly Mount

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Make: Ford
Model: Fiesta
Type: ST150
Year: 2008

Re: ST150 exhaust and tuning advice

Postby heinrichlourens » Mon Jan 15, 2018 10:19 am

Does the car rely on back pressure to perform well?


And on the intake, would a 90 bend sillicone pipe with K&N filter do the same as the SRI? Air will feed from the standard ram vent in the bumper.

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Re: ST150 exhaust and tuning advice

Postby Stu » Mon Jan 15, 2018 2:08 pm

heinrichlourens wrote:Does the car rely on back pressure to perform well?


And on the intake, would a 90 bend sillicone pipe with K&N filter do the same as the SRI? Air will feed from the standard ram vent in the bumper.

answer is yes and yes
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Re: ST150 exhaust and tuning advice

Postby heinrichlourens » Tue Jan 16, 2018 2:29 pm

Thanks for the input guys.

Intake I think I'll build my own with sillicone tube and filter.

Exhaust wise I want to go with SWR branch and Powerflow cat back. I'm just waiting to hear from SWR if they can still get me that branch. Otherwise I'll stick to powerflow as they seem to have the most experience with the ST150.

Then When cash is available I'll go for the Unichip probably. Unless the ECU is open source and can just be mapped?

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