2014 Ford Fiesta ST project

Discussion in 'Fiesta ST Photos and Media' started by razorlab, Jul 21, 2014.

  1. razorlab

    razorlab Active Member

    Incorrect. 3rd gear will show lower numbers than 4th gear. Either way notice I'm showing DELTA GAINS, the actual numbers don't matter.

    I can show you real mustang dyno pulls done in 3rd and 4th gear on the same car, with the same mods if you do not believe me. Torque will be sooner and higher in 4th gear.
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  3. RodMoe

    RodMoe Well-Known Member

    The vDyno program has a function to put in the cars gear ration and adjust the reading for the info you put in so it is only as good as the data you provide including the frontal profile of your car and weight and lots of other doo dads. But yes it is a 3rd gear pull which is a safer way to gather data and if you compare apples to apples it should be close enough for this project..
    Last edited: Jul 31, 2014
  4. razorlab

    razorlab Active Member

    Here you go, real dyno, real world. Same car, same mods, same time, same day. 3rd gear and 4th gear.

    I personally tuned this car. I was there, operating the vehicle.

    Dotted lines are 4th gear, solid are third.

    RodMoe and Cligedy like this.
  5. totusPorcus

    totusPorcus Member

    your 'MOTHER OF GOD' comment was spot on. Thats a fiesta R5 which is a purpose built race car that is cheap (200K) when compared to the other purpose built tarmac and gravel rally cars. There an extended vid of a guy driving one on gravel and tarmac. its all wheel drive, sequential dog box, straight cut gears that whine and a restricted (via a plate) 1.6L motor that produces almost 300 hp.

    Its the wheels that intrigued me and i was able to find who makes them speedlne (italian)
  6. razorlab

    razorlab Active Member

    The curious thing about the Fiesta R5 1.6L is that they are using the Focus ST 2.0L intake manifold.

    djdennehy likes this.
  7. razorlab

    razorlab Active Member

    All, I'm looking for a used OEM Turbocharger. I believe it's part #CJ5Z6K682D

    It's for R&D for a possible internals upgrade, so it's for a good cause. :)

    Keep your eyes open for me, thanks!
    djdennehy likes this.
  8. razorlab

    razorlab Active Member

    Ok here is a small bit of data on MPG. Make sure to look at the DELTA between the numbers and not the numbers themselves since every body drives differently and has different routes with different outside influences. I use the FiST to commute approx 50 miles a day. It's a mix of city and highway and I have fun with the car on occasion. ;)

    Last two tanks of 91 octane before switching to Ethanol mix and tuning for it as well.

    91 oct - Jul 20, 2014
    270 miles - 25.06 mpg

    91 oct - Jul 22, 2014
    105 miles - 26.24 mpg


    E30 - Jul 27, 2014
    236 miles - 24.33 mpg

    E45 - Jul 31, 2014
    263 miles - 24.44 mpg

    So far, if I take the average of the two 91 octane data points and subtract the current E45 data point, it's just a -1.21 MPG difference. Of course I need more E45 data points to really make this valid but it gives us a look.

    As you can see, I'm obviously tuning the Ethanol mix for better mileage overall then if I didn't tune with that in mind, hence the E45 having even slightly better MPG than E30. I still think I can get the Ethanol mix tune VERY close to normal gas. The ECU and Ecoboost motor gives me enough control to really make some gains there.
    ISO100 likes this.
  9. WScottCross

    WScottCross Well-Known Member

    I also have ATR and understand that I would be using this at my own risk.
  10. razorlab

    razorlab Active Member

    Ok, I think it's time to upgrade the FMIC.

    4th gear WOT into 5th. Over 20* increase, even with a whole lot of air hitting it at those speeds. Yikes.

    Currently looking at Airtec or ATP.

  11. razorlab

    razorlab Active Member

    Well hit my first road block and "ah ha!" moment all in one in continuing to learn the ECU tonight.

    I've been having an issue where I keep hitting a ignition timing ceiling and it wouldn't let me run more ignition timing in the midrange and through the top. Well I figure it out. The car ended up running more timing through the midrange and through the top which remarkably gave me another 14whp/14wtq from 4200rpm to 6000rpm. It felt really really strong. That's the good news.

    The bad news is now it's running more ignition timing then I would like to run without putting the car on a real dyno to find MBT. Obviously it made more power so I'm not past MBT but I also hate not know what MBT is so I'm going to dial it back until I can get it on a real dyno.

    The owner of the dyno I use is out of town for now so I'll have to wait until he gets back in town to get it strapped down and find MBT.

    The other good news is I'm really finding my way around the ECU more and more every day. :) It's really very cool and powerful compared to what I am used to. Still really excited about it all.
    Cesso, RodMoe and ISO100 like this.
  12. Cesso

    Cesso Member

    I'm thrilled with the possibilities these new direct injected turbocharged engines offer with such an advanced engine computer. Good luck and thank you for exploring what this platform is capable of. I haven't been this excited about a car since my childhood.
  13. razorlab

    razorlab Active Member

    New trunk mounted goodies... ;)

    bryramos likes this.
  14. Firesail

    Firesail Active Member

    Won't do much good there!:eek:
  15. Joe Schmoe

    Joe Schmoe Member

    Just a mention of some of the learnings from the 2014 MX5 ECU - be wary of timer based logic built into the ECU when tuning. There are maps that are referenced in that application (an application with lots of ties to Ford) that are invoked that pull fuel during hard running for a given amount of time, something like 20 seconds of open loop running. It's a condition that resets itself only after a specific rest period. No one has figured out the reason behind it but some guess it's to protect the cat. The tuners just zeroed it out, but keep in mind that even though what I describe sounds like how the ECU might treat overboost, watch out for similar logic. It may not show up on a dyno. Lots of logging, including some road course running would show it.
    Last edited: Aug 5, 2014
  16. razorlab

    razorlab Active Member

    Thanks for the heads up. I believe there are a bunch of timer based fuel enrichment tables but I haven't seen any enleanment, of course that doesn't mean it doesn't exist and just not defined....

    I 100% already plan on logging on track. :)

    They finally have flash based tuning for Miatas?
  17. Joe Schmoe

    Joe Schmoe Member

    Just the current generation, but modern ECUs are so complex now that no one has defined all the maps or when and how they all are envoked, and may never.
  18. razorlab

    razorlab Active Member

    Yea. On the Evo 10 ECU, which isn't that complex compared to the MED 17 ECU, we wrote a program that found all actual sets of tables in the ECU which got us to about 419. However, only about 60-80 of those are currently defined and used for tuning the car and it's been out since 2008.
  19. razorlab

    razorlab Active Member

    Ok, this is insanity. I ordered an Airtec FMIC from the UK on Wednesday this week.

    Today, being Friday, two days later, guess what showed up at 10am?

    Auto Specialists in the UK, you rule!

    landwombl and LotusZX3 like this.
  20. ryst

    ryst Active Member

    Nice! How much was it USD with shipping?

    Also those Airtec end caps are straight up sexy.
  21. razorlab

    razorlab Active Member


    Shipping was free, and got here via teleport technology, apparently. ;)

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