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2014 Ford Fiesta ST project

44183 Views 126 Replies 27 Participants Last post by  twendt
So I picked up a 2014 Ford Fiesta ST to play with. There are a bunch of reasons I did this so I'll just make a simple numbered list to help explain why.

1. I wanted a small lightweight car again (It's 27XXlbs)
2. I wanted to learn the Ford ECU
3. I wanted to track a small lightweight car
4. I wanted a small lightweight car that got great gas mileage for my commute

That's about it overall for the reasons. With over 20 years of driving Mitsubishis, Subarus and VW's I never ever ever ever thought I would own a Ford....

For some reason the Focus ST never really intrigued me. After reading all the press about the Fiesta ST, it did intrigue me, I went and test drove a bunch and I totally fell in love with the car. It really feels like something special, a Ford engineering baby.

I still own my current Evo, an Evo 10, for now. It's in a different league for sure, but I didn't buy the Fiesta ST to replace the Evo. So enough about that.

This thread will serve as a place to post my findings as I learn the car, the ECU, etc.

I come from a tuning background. I used to tune Mitsubishis professionally, mainly Evos. Most recently a 2005 Evo 8 MR for 10 years that was my personal project, that I tuned and tracked. It had 500hp on E85. I also had a 2010 Mitsubishi Lancer Sportback Ralliart that I also tweaked and tuned to 400hp on E85. As stated above still have my Evo 10, 400hp, also on E85. You can sense what's coming for the Fiesta ST then.

Initial photos, 100% stock minus upgraded wheels/tires.

2014 Ford Fiesta ST
Recaro Package
"Rado" wheel package (painted wheels and brake calipers)

Wheels replaced with Sparco Assetto Gara 17x7 +42 satin black
Tire replaced with Bridgestone Potenza S-04 205/45/17

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Damn razor, you're really going all out on this car. What drove you to get the Airtec over the alternatives?
Damn razor, you're really going all out on this car. What drove you to get the Airtec over the alternatives?
Size and design. Wanted something that filled the whole opening like stock and had a good sized core with well designed end tanks.
Ok, spent all day installing stuff today. Wilwood brake kit and the Bilstein coilovers.

I can't drive the car yet because I need to set the ride heights and bleed the brakes still. The Wilwood calipers have the smallest and cutest little bleed screws I have ever seen, they are almost half the size of a 9mm wrench so I need to go buy a new wrench for that and the Bilstein coilovers where set low as hell out of the box. The pictures below are even with me turning up the fronts about 3 turns from factory before installing too.

The car as it sits in the photos is 2" lower in the front and about 1" lower in the rear. Going to raise the front obviously. Over all the installs went smooth, I just took my time.

Wilwood GT rotors vs. Stock Fiesta ST rotors:

DP6 caliper:

Cute lil' bleeder screws:

Bilsteins and Wilwood BBK:

Looks like lots of room if I wanted to down to 16" wheels:

Way too low in front:

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As an update. I didn't have time to finish the car up this weekend so I won't be able to touch it again until next weekend. Need to bleed the brakes, set the ride height and get an alignment before I drive it again.

Driving my Evo 10 this week. Haven't driven it in over a month, about the same time I've had the Fiesta. It sure is a sledgehammer compared to the FiST, but the FiST feels like a go kart compared. ;)

btw, the bleeder screws on the Wilwood calipers are 1/4".
Did you ever get the garage line pedal spacer installed?
Installed the Airtec FMIC today.

Fit great, easy install. There are only three things you have to remove to get it to fit perfect and that is three bolts underneath that would otherwise hit the core and eventually wear through it. So wonder no more, this FMIC fits USDM Fiestas no problem!




Tight fit but fits perfect:

With the bumper cover on, it looks exactly like stock, which is exactly what I wanted. :)
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I've beeen so close to buying this ic. Looking like stock is the exact same reason I want it. I considered the mishimoto, levels, atp and many other and this is exactly what I'm looking for. Any difference ? Does it feel any different?
Drove the car around today after setting ride heights.

The suspension feels sooooooo much better than stock. The bouncy resonance that the stock set up had is basically gone and the car is super smooth and more refined feeling. EXACTLY what I was looking for. Very happy with it so far. Of course, need to still get an alignment and put more miles before I do a full review but so far so good.

The con, at least for me, is that I have the front perches basically all the way up and it's still 1.25" lower than stock which is a tad too low for me. Kind of a bummer. Would be great for most people but I'm just not into too low. I'll see how it goes...

I also think I might be wanting more than just 100lb/in more than stock spring rates in the future... we'll see how it is on track next month.

Look! A intercooler that works! Happy to have this on the car. Works great.

Here are two datalogs, OEM FMIC vs AIRTEC FMIC. It was the closest to the same temp log I could find. It was a couple degrees cooler for the OEM FMIC log and as you can see, the AIRTEC still kicks its ass.

Red is AIRTEC, green is OEM.

Starting temp OEM: 77F
Ending temp OEM: 99F
Temp increase: 22F

Starting temp AIRTEC: 79F
Ending temp AIRTEC: 83F
Temp increase:4F

Ambient temp for both logs - Approx 70-74F

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Went and got the car aligned today by Jack at Motorsports Techniques in Hayward, CA.

I've been going to Jack for about 14 years now I think. He has aligned all my cars and does great work.

For a recap, the car, suspension wise has:

Bilstein B14 PSS coilovers (#47-167490)
Goldline camber bolts (#81250)
Lowered 1.25" front and 0.75" rear

I set the camber bolts at full negative camber before bringing the car in to see Jack and here are the numbers after an alignment:


Camber: Left -1.9* / Right -1.8*
Caster: Left 3.4* / Right 3.6*
Toe: Left 0.00 / Right 0.00


Camber: Left -0.7* / Right -0.4*
Toe: Left 0.08 / Right 0.13

This is the first rear beam car I have owned so it pains me a little that I can't do any adjustment in the rear but it is what it is I suppose. I'm so used to Evos that you can adjust pretty much everything straight from the factory.

The car feels amazing now. Turn in is awesome, almost as good as my Evo 8 was, which is no small feat. Lateral grip and stability is way up too. I'm hoping this all translates well to the track. I will find out next month!

The brakes....

The car just stops NOW. I'm running the Wilwood BP-20 pads up front, which is a step up from the BP-10's they usually put in the kit and the BP-20's are supposed to be their street/track hybrid pad. Braking is really amazing now and all the squirrelyness with the back wanting to come around that the stock setup had under braking is completely gone now.

Totally happy with the brakes, especially for under $900 including the upgraded pads and the upgrade GT spec rotors. Total bargain.

With true race pads the car will probably feel like I threw a 5,000lb boat anchor out the back on braking.
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Before you went with the Wilwood upgrades, what did you run for front pads? Where the heck can I find some better pads for the OEM brakes?
Before you went with the Wilwood upgrades, what did you run for front pads? Where the heck can I find some better pads for the OEM brakes?
Stock pads. Car has 1800 miles on it currently. I just gave my front pads to a buddy here in the Bay Area because OEM are on national back order and they basically looked brand new.

I believe Porterfield, Hawk, Raybestos make pads for the stock calipers.
I have found several options for the rear but not the front, can anyone else shed some light on this for me?
Here is my cold start up and commute to work this morning. Some noticeables are, my lean cruise settings for AFR so far, some WOT events and Charge temp and intake temp being very close to each other. Yay Airtec FMIC!

This is approx 25 miles of driving.
I have found several options for the rear but not the front, can anyone else shed some light on this for me?
I just saw this and maybe I'm missing some context, but there are better pads for stock brakes. See the related brake pad threads (use key word "Porterfield")!

My experience is with Porterfield R4 (race) compound, only. If you're looking for a track pad, this is it.
Not looking for a 'track' pad as much a competent Autocross pad that I can use everyday... I used to use Hawk performance pads when I raced my MK3 Supra, they were loud but got the job done and I didn't need to replace them after every race. Would you say that the Porterfields fit that description or???
Track tires/wheels came in yesterday.

Brand new Dunlop ZII Star Specs which just came out about two weeks ago. Looking forward to trying these out.

Going to go wider next time but for now, these will do.

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Track tires and wheels mounted yesterday in prep for this weeks track event.

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