Pretty lean under boost in stock trim Bryan. Yikes. EcoBoom.

 

Remember it's direct injection but yea a little lean for me on 91.

 

Welp, this little guy is seriously waking up with Ethanol!

I logged a bit on my commute to work this morning after tweaking the tune a little bit last night. Got the LTFT/STFT back in line and adding some timing. Feels like a proper turbocharged car now. Can't wait to do more tweaking.

Here is a log with a brief 3rd gear WOT to around 5,200 rpm or so:

http://datazap.me/u/razorlab/fist-et...15&zoom=89-139

Good news is the HPFP looks like it's keeping up no problem at E30 level so far.

 

Ok here is an update with where I am at with E30!

Before I get to the results, I wanted to say that I found that my logging road shows higher VirtualDyno results on one side of the street compared to the other which has a slight decline. So I went back and ran my logs all from one side of the street which was flatter and they all seemed more inline so I am going to be using that side of the street from now on. You will see my "Stage 1 with tweaks" is showing lower numbers now. Honestly I think this is more accurate by how the car felt tuned on 91, vs stock on 91, and also more inline with the curves I have seen from the COBB maps.

Ok... so with that out of the way...

Here is my first rev of the E30 tune vs stock tune. Pretty big gains for such a dinky turbo car and the same boost levels as my 91 octane tune. Remember the car is 100% stock power wise except for the tune.




It was about 15 degrees hotter today compared to the stock and stage 1 tweaks runs. My Charge temps increased 25 degrees over the span of a single pull. Time for an FMIC upgrade!

Here are all three, stock, Stage 1 with tweaks on 91 octane and where I am at currently on E30



I'm going to be tweaking the E30 tune a little bit more before I move to higher Ethanol levels. I think there is a little bit more room up top for ignition timing.

After logging IPW tonight, IDC's are no problem. Going by the Focus ST guys, the HPFP will be the limiting factor on Ethanol, before the injectors. HPFP might not even be a limiting factor for us with our dinky turbo.

Here are IDC's from my car on E30.

3446 RPM
9.06 IPW
26.02% IDC

6290 RPM
6.83 IPW
35.29% IDC

If our stock injectors are the same as the Focus ST, I believe they are 1kcc.

Here is RPM, Boost, Fuel Rail Pressure.

 

very nice!

 

Impressive torque numbers. No worries about busted rod? Looks like the injectors have tons of headroom.

 

Always worried about breaking stuff

Other guys making more torque with mods but I'm going to start bringing it down anyway as it's almost impossible to not liquefy the tires currently in 1st and 2nd. There is per gear torque reduction too that I'm bringing back in.

 

Assembled the Bilstein coilovers today to prepare for install. At under $800 on this platform, these seem like an outstanding value for the money!

Looking forward to installing these.

 

I too was at the Ecoboost challenge that Ford put on with Bill. I too found the Fiesta ST lighter, more nimble, and a bit better handling of a car than the larger, bulkier Focus ST. My daily driver is a SVT Focus, and the Fiesta is around the same size, so If I had to make the choice of Focus ST vs. Fiesta ST., the Fiesta St would take the top prize.

Congrats on the car, I look forward to seeing your progress with the car!

 

Seems like a no-brainer!

 

Based on the spring length and number of coils, it seems like there's maybe 3" total rear wheel travel?

 

Good question. Not really sure. The rear suspension is not a spring on coil. It's a strut and a spring on a perch, like other Fords and some VW as well.

 

Ethanol update...

I'm at E45 now, from E30 before.

FRP still hitting commanded pressure at 2200 no problem.

 

Interesting thread. Thanks for sharing.

I know a few engine calibrators that originally tuned the Ecoboost-4 Taurus and Focus ST who work at Ford. If you get stuck on an ECU issue I may have a few people who we could bug for some help.

I do recall seeing them use a tool called ATI VISION when originally tuning the cars. I was showing them EcuFlash on the Evo and they were all surprised it's color coded (heatmap). Their professional software is just a white background with a grid for tuning the maps and no color.

I wonder how much the stock cam is limiting the setup? I'd assume they used economy-based profiles and duration. Anyways quite interesting. Thanks for sharing.

 

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