How The Tuning Process Works:
-
You will be contacted within 1-2 business days by us via email after purchasing the tune.
-
Once contacted, you will be asked to complete an online tuning form where you will fill out your modifications and options such as launch control, shift light RPM.
-
After submitting the tuning form you will receive your Customized Stratified Flash Tune via email. We aim to send out tunes within a 48 hour time window however, during the busy seasons it can take up to 5 business days.
BEFORE PLACING AN ORDER PLEASE CAREFULLY READ THE OPTIONS SECTION BELOW
"Elegant" and "Refined" are understatements for how the tune makes the car behave around town. -LMStone510
The Ultimate Tuning Experience
At Stratified we pride ourselves in offering our customers the most complete tuning experience. We hold paramount in providing the most robust tunes in the market while adding a touch of unique personality to each client’s calibration.
Each Stratified Flash Tune is based upon countless datalogs and hours of development.
- Designed to maximize performance safely and reliably
- Smooth and predictable throttle modulation
- Built in reactive boost control that adapts to your environment
- Enhanced driving dynamics and with exceptional drivability
- Customized for every performance modification on your car
- Preferences set to your liking from a wide selection of options and features
- Catered to your driving style with customizable throttle mapping
The Numbers
Depending on your modifications and fuel you will see boost ranging from 24.5 - 26.5 psi.
E30 (Ethanol Mixture) and WMI (Water-Methanol Injection):
The graph below presents a compairson between a 91 octane pump gas and an E85 blend, gains of 15-20 WHP/WTQ are expected depending on the quality of the base fuel and modifications.
Stock Turbo:
Stock turbo cars will be limited to the stock turbo's capabilities, fuel quality, and modifications; power output will be between 190-220 WHP for most cars.
The Options
Turbo and WMI setup:
All cars MUST be running the stock motor.
- Engine internals (pistons, rods, bearings) are the only exceptions.
- Aftermarket Turbos or modified actuators will require a ProTune.
- Cams, heads, stroker kits, and auxiliary fuel systems will require a ProTune.
*** WMI setups include Datalog Refinements at no extra charge.
Fuel Configuration (SWITCHABLE):
Unique fuel types and mixtures such as race gas, octane booster, etc. will require a ProTune.
We take advantage of the COBB AP's map switching utility allowing you to select from up to 5 different maps slots using COBB Map Switching.
Each TUNE FILE contains UP TO 5 MAP SLOTS (not all may be used). MAP SLOTS are SWITCHABLE on the fly using your Accessport or Cruise Control buttons.
None Performance Slot Options:
Low Torque: We setup a low power (15 psi) map in a spare map slot for winter/poor conditions/limp home.
Eco Mode: We reduce boost to spring pressure for fuel economy (5-6 psi).
Valet Slot: With great power comes great responsibility. In this mode the primary rev limiter is set to 3,000 rpm and limits boost to 10 psi.
Anti-Theft Slot: In this mode the car will start for a second and then very quickly shut off.
STuned Crackles (SWITCHABLE):
Can be assigned to each slot independently, recommend on full boost slot only.
This feature adds crackling/burbling sounds to your exhaust when lifting off the throttle and coasting down in gear. The frequency and intensity of the sounds highly depend on your current engine speed during lift off and most importantly: YOUR EXHAUST SETUP. Progressive crackles have a mild intensity at lower RPM, Loud version is more consistent.
Add same fuel type multiple times with differnt exhaust crackles settings to adjust Exhaust Crackles on the fly.
Using this feature allows Enable/Disable exhaust crackles or switch between crackle intensities on the fly, if the map slot does not have a fuel type selected then crackles won't be enabled on that map slot and money paid for the crackles on that slot will NOT be refunded.
** We have not tested all exhausts for sound quality. During testing we have found that exhaust gas temperatures have stayed relatively the same and catalytic converter temperatures had no significant increase compared to having no crackles. However the exhaust as a whole does experience higher intensity sound/pressure waves.**
Extra Options (NON-SWITCHABLE):
CANNOT be switched via map slots on the fly. APPLIES FOR ALL MAP SLOTS.
Custom Shift Lights: Currently the shift lights are programmed for optimal fuel economy. This option allows you to either set your shift light to turn on at a certain RPM or you can disable it completely! Specifics will be asked in the tuning form after you place an order.
2nd Gear Torque Limit: Want more traction in 2nd gear? We can limit the torque for you here so that you don't burn through your tires!
Idle RPM Change: We can also change your idle RPM. This is particularly useful if you're running stiffer motor mounts to eliminate unwanted vibration during idle. Specifics will be asked in the tuning form after you place an order.
STuned Traction Control:
Can be enabled/disabled using the Accessport menu. The intensity (or mode) of the traction control can be customized to your liking using your Accessport. KEEP IN MIND THE SYSTEM WILL REVERT BACK TO 'OPTIMAL' MODE 1 EVERY TIME YOU START YOUR CAR.
The guys and gals at COBB have implemented an ignition retard traction control system. The OEM traction control works based on applying the brakes and closing the throttle. The COBB system works by reducing output via ignition timing reduction when wheel slip is detected. It is a slick system and it works all the time while enabled on a tune. More about it here.
To further enhance the Stratified driving experience, we have refined this system by making our very own STuned Traction Control calibration.
- Allows for the perfect amount of slip allowing the driver to modulate their pedal input without too much intrusion from the ECU
- Proven to maintain adequate traction while keeping the driving experience exciting
- Perfect for rainy seasons and clean launches
Check out our video demonstrating STuned Traction Control:
Datalog Refinement:
Purpose:
- Enhance performance of your Flash Tune IF AND ONLY IF there is leeway or headroom, OR make adjustments based on datalogs to ensure your car operates safely with your local fuel and particular environment using a SINGLE tune iteration.
- To report if there are any issues and make suggestions on how to correct them (swapping parts, repairing leaks, changing fuel)
- If your car runs optimally on your local fuel or a particular environment, you will receive a full report on its performance.
** DISCLAIMER **: ALL CHANGES WILL BE BASED ON THE DATALOGS RECEIVED AND OUR EXTENSIVE EXPERIENCE AND EXPERTISE (THIS MEANS THAT WE WILL EITHER INCREASE PERFORMANCE OR MAKE ADJUSTMENTS FOR ENGINE SAFETY). AS SUCH, WE CANNOT AND WILL NOT GUARANTEE THAT PERFORMANCE WILL ALWAYS BE ADDED.
For more information click here
Misc. Features:
To maximize the utility of your Stratified Flash Tune we include several setup preferences to suit your needs. These include:
Flat Foot Shifting: Allows you to shift without lifting off of the accelerator pedal. Specifics will be asked in the tuning form after you place an order.
Launch Control Settings: We can set up different launch control RPMs in Performance Map Slots. Both Fuel Cut and Throttle Cut Launch Control are included and set at the same RPM. Street tire cars have this set up between 2500 and 3500 RPM. Specifics will be asked in the tuning form after you place an order.
Fault Code Adjustments: We can adjust any non-emissions related check engine light codes that may arise from modifications.
Check out COBB's video demonstrating some of the features listed above:
The Details
The Stratified Flash Tune is THE tune for your stock turbo FiestaST. These maps are designed and extensively tested to employ our latest tuning strategies that we have spent countless hours refining. We have built-in features that ensure engine safety, performance, and excellent drivability. Your Stratified Flash Tune is customized based on your modifications, fuel, and setup preferences. Modifications such as Front Mount Intercoolers, Intakes, Downpipes, Cat-Back exhausts, and Bypass Valves all determine how the tune is set up. We recommend these tunes for all setups from a 100% stock Fiesta to one with full bolt-ons.
WMI setups will come with complimentary Datalog Refinements.
Our experience with these setups has allowed us to be able to finalize the tune within a swift timeframe!
Is E85 good for my Ford EcoBoost motor?
As long as the E85 and pump gas mixture is kept below E50 it is perfectly safe to run blended fuels in the Ford EcoBoost. We recommend reading our FAQ or our write-up on The Benefits of E85 for more information.
What do I need in order to run E30?
These maps are safe to run on an otherwise stock Ford Fiesta ST. That being said, performance will increase as you add modifications such as intercoolers, intakes, exhausts, or by-pass valves.
Can I run full E85?
Filling up with ONLY E85 is not recommended and may cause deposits to form on the high-pressure fuel pump. The target is to achieve an E30 mixture by mixing E85 and premium pump fuel.
Your power output HIGHLY DEPENDS on your fuel quality, environment, and modifications.
Since fuel quality varies in different countries and regions, the Flash Tune is designed to be safe for the majority of vehicles in the market. This means the flash tune can exhibit 5-10% less power than a ProTune with the stock turbo given that your fuel quality and modifications are able to support that extra power in the first place. Many cars actually make 100% of that power with the Flash Tune while running the stock turbo.
However, if you suspect that the quality of your fuel is subpar or if you think you have more headroom for more power, we recommend choosing the ‘Datalog Refinement’ option as an add-on. This allows us to refine your tune with one iteration to either make sure your car is running optimally with your local fuel or increase power if there is headroom. Keep in mind that it is not guaranteed that changes will be made. As mentioned above, many cars won't need any adjustment from the base calibration!
A ProTune is recommended for individuals who:
-
Have exceptionally good fuel (race gas, 100+ Octane)
-
Operate under extreme conditions (road racing, drag racing, HPDE)
-
Have any Big Turbo kit paired with an Auxiliary Fuel System
-
Have a stock turbo with a modified or aftermarket wastegate actuator
The Flash Tune ONLY supports:
-
2014+ Fiesta ST (Unmodified OEM KP39 turbo)
-
Stage 0 (stock) - Stage 3 (fully bolted) on Stock fuel system or with WMI
-
USDM 5 Door Only
-
91OCT/95RON to 94OCT/98RON, E30
Current Version:
The current version (as of Aug 15, 2026) is 5.00. If you purchased your tune before this date you can upgrade here.
How The Tuning Process Works:
-
You will be contacted within 24 business hours by us via email upon purchasing the tune.
-
Once contacted, you will be asked to complete an online tuning form where you will fill out your modifications, the fuel you use, and options such as launch control.
-
After submitting the tuning form you will receive your Customized Stratified Flash Tune via email. We aim to send out tunes within a 48-hour time window however, during the busy seasons it can take up to 5 business days.
Development Videos:
A glance at what goes into each Stratified Tune:
