2014 Ford Fiesta ST project

44077 Views 126 Replies 27 Participants Last post by twendt, Oct 13, 2015

razorlab

Discussion Starter · Jul 21, 2014

9

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
Options:
Recaro Package
Navigation
Sunroof
"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

See less See more

Reactions: 5

21 - 40 of 127 Posts

razorlab

Discussion Starter · #21 · Jul 28, 2014

Ethanol update...

I'm at E45 now, from E30 before.

FRP still hitting commanded pressure at 2200 no problem.

ryst

· #22 · Jul 28, 2014

Any chance you'd release your ethanol tune to the community so we could try (at our own risk of course), or are you planning on monetizing it at some point?

Also This:

See less See more

Reactions: 1

razorlab

Discussion Starter · #23 · Jul 28, 2014

ryst said:
Any chance you'd release your ethanol tune to the community so we could try (at our own risk of course), or are you planning on monetizing it at some point?

That's a great question. I might do something like what I did/do with the Mitsubshi community:

http://forums.evolutionm.net/09-ral.../443880-2009-lancer-ralliart-gst-basemap.html

Want to get more miles and better understanding of the ECU first though. Also would need to look into the logistics and legality of it as well.

ryst

· #24 · Jul 28, 2014

razorlab said:
That's a great question. I might do something like what I did/do with the Mitsubshi community:

http://forums.evolutionm.net/09-ral.../443880-2009-lancer-ralliart-gst-basemap.html

Want to get more miles and better understanding of the ECU first though. Also would need to look into the logistics and legality of it as well.

That is *exactly* what I was hoping for. Currently all the tuning for the FiST is pretty closed off. I haven't seen even a single custom tune posted anywhere yet other than the OTS Cobb tunes.

I currently have zero car tuning experience, but I'm getting a handle on how the ecoboost ECU works and I've done a lot of reading on general tuning theory, I was hoping that the FiST would be my learning platform (factory wideband ftw), but everyone who is doing tuning for Ecoboost says it's FAR more complex than any other vehicle they've ever tuned (including you

), which has been putting a damper on my willingness to start experimenting.

totusPorcus

· #25 · Jul 28, 2014

razorlab said:
Ethanol update...

I'm at E45 now, from E30 before.

FRP still hitting commanded pressure at 2200 no problem.

you wanna rent a dyno. start increasing the ethanol content and doing runs while watching stoic, and pressure (is that what you watch. do they have something like percentage used, sorta like a non DI motor's injector percentage?)

i really want to know if you can add a slightly bigger turbo and run e85 without screwing with the fueling system.

razorlab

Discussion Starter · #26 · Jul 28, 2014

totusPorcus said:
you wanna rent a dyno. start increasing the ethanol content and doing runs while watching stoic, and pressure (is that what you watch. do they have something like percentage used, sorta like a non DI motor's injector percentage?)

I'm watching all those things. I've been tuning on Ethanol for over 6 years now on a bunch of different cars, setups, situations, etc.

DI has Injector PW (I posted the current PW values earlier in this thread) but what I'm really keeping an eye on is both the HPFP and LPFP duty cycle and pressure to make sure they are keeping up with the increased volume demands.

Stoich (or whatever you set in the target in this ECU) will always be reached up until it runs out of +30/-30 fuel trims on this ECU. I've been tweaking the Global Scaler with each % of Ethanol change as well so they trims don't have to sway too much as Ethanol increases.

As far as you eluding to using a dyno to find MBT, I certainly agree but I'm not currently shooting for anything close to MBT. Currently seeing what % of Ethanol I can get away with the stock fuel system, then I will do the real fine tuning.

razorlab

Discussion Starter · #27 · Jul 29, 2014

I have no update on the car today so I figured I would just post this photo of it in in my garage with some parts ready to be installed:

I kid, that's a Fiesta R5, and it's not mine, nor is the garage.

See less See more

Reactions: 5

RodMoe

· #28 · Jul 29, 2014

Nice pic

Cesso

· #29 · Jul 29, 2014

See less See more

Reactions: 4

razorlab

Discussion Starter · #30 · Jul 30, 2014

Still at E45, here is a snap of a log from this morning. HPFP still keeping up no problem.

See less See more

totusPorcus

· #31 · Jul 31, 2014 (Edited)

2

razorlab said:
I have no update on the car today so I figured I would just post this photo of it in in my garage with some parts ready to be installed:

I kid, that's a Fiesta R5, and it's not mine, nor is the garage.

okay.. why buy when you can rent...... (r5).. http://www.rallycarsforsale.net/clas/index.php?ct=frrc&md=details&id=77742

and see the main site (several r5s listed).. http://www.rallycarsforsale.net/clas/index.php?ct=frrc

wonder what those wheels are....

See less See more

razorlab

Discussion Starter · #32 · Jul 31, 2014

2

Ok here is where I'm at currently with E45. I think I'm going to leave it like this for a bit and beat on it and log a bunch to make sure every thing is ok. I could probably run more timing out the top but going to keep it where it is for now.

Really happy with the power gains for a 100% stock Fiesta ST with just E45 and tuning. Pretty darn awesome, especially with the dinky turbo it has.

+35whp / +75wtq peak gains

E45 vs E30

See less See more

Reactions: 2

Cesso

· #33 · Jul 31, 2014

That is seriously impressive. 285 ft-lbs to the wheels is absolute insanity for a 1.6L engine (and a stock one at that!). My old F-250 with a 7.5L V8 put down 375 ft-lbs to the wheels with 4.6 times more displacement.

Reactions: 1

Pedro

· #34 · Jul 31, 2014

That is pretty much the same gains as cobbs stage 3! That really does blow my mind what tuning with e blend can do. Any chance you might want to sell your tunes?

Reactions: 1

WScottCross

· #35 · Jul 31, 2014

Pedro said:
That is pretty much the same gains as cobbs stage 3! That really does blow my mind what tuning with e blend can do. Any chance you might want to sell your tunes?

You know there are a bunch of us ready to pay for this. you should be compensated for your time and knowledge. Even if you don't want to formalize it, give us a paypal address so we can throw something your way. This is way too much tease, please share it.

Reactions: 1

razorlab

Discussion Starter · #36 · Jul 31, 2014

I would have to become a Cobb Protuner (again) to sell Cobb maps for profit and I'm not in this to make money.

I will continue to share my findings for sure. I think there isn't an issue with sharing maps either if people are curious to see them. You would need to have Accesstuner Race though.

Reactions: 1

RodMoe

· #37 · Jul 31, 2014

razorlab said:
I would have to become a Cobb Protuner (again) to sell Cobb maps for profit and I'm not in this to make money.

I will continue to share my findings for sure. I think there isn't an issue with sharing maps either if people are curious to see them. You would need to have Accesstuner Race though.

I have the ATR and would LOVE to get a handle on this tuning thing to understand how my car works. And a peek at your work. And I know once i recieve the map in my mail box it is all on me no implied guarantees or promises as to what the tune will do for me or to me as there are SO many variables in fuels and drivers ...
Thanks
RM

Reactions: 1

CarefreeAZ

· #38 · Jul 31, 2014

Cesso said:

I was trying to think of a phrase to adequately express what I felt when I first saw the pic of razor's garaged Fiesta...you said it perfectly!

razorlab

Discussion Starter · #39 · Jul 31, 2014

CarefreeAZ said:
I was trying to think of a phrase to adequately express what I felt when I first saw the pic of razor's garaged Fiesta...you said it perfectly!

Make sure you read what I posted below the photo.

Jeff

· #40 · Jul 31, 2014

Does anyone else notice the gear this log was taken in? Numbers will be elevated compared to a real dyno done in 4th (1 to 1 ratio)

21 - 40 of 127 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.