TUNING &
PERFORMANCE

Călin @ Cherry Tuning & Performance:

Hyundai i30N Performance ECU Calibration (Eastern Europe)

Optimized Power. Pure Driveability. Factory-Grade Reliability.

Our calibration solutions for the Hyundai i30N are not just “Stage” remapping

solutions, they are OE-like ECU calibrations designed to deliver measurable

performance gains while preserving the character, safety, and reliability of the

original vehicle.

We believe in engineering that respects both the machine and its purpose —

which is why every remap is tailored, tested, and validated using professional

tools and methods.

Every solution made for this platform is custom, made for the type of fuel that

you put in the car, in-line with official OEM-manufacturers standards, by our

Engine Calibration and Software Engineers.

Performance Enhancement Without Compromise

• Noticeable gains in acceleration and responsiveness
• Smooth power delivery across the entire RPM range
• Full load performance enhanced while maintaining driveability in daily use
• Improved fuel economy in normal conditions

Safety and Reliability First

• ECU is read/written via safe bench mode – no ECU opening – warranty is

not voided

• Fully reversible software process
• Licensed and original tools only
• Catalyst and exhaust gas temperatures are protected
• Calibration stays within OEM-defined emission thresholds (EUROPEAN

regulations)

• No stress added to the components of the vehicle

Included Add-On Features:

• Custom Pops & Bangs <<track use only>>
• GPF / DECAT / VMAX OFF solutions <<track use only>>
• Stop & Start Disable
• Take-Off Assist / Idle-Up / Anti-Stall Features
• Exhaust flap control for loudness/ silence
• Improved launch control
• Fan mod (for track use cooling)
• Torque by gear for driveshaft protectionand/or better driveability

Tested with Care – Tuned for the Road

All calibrations are backed by real-world testingand 100% custom using high-

accuracy RaceBox GPS and full OBD data logging. We ensure that the vehicle’s

thermal performance, fueling, and emissions remain within safe and legal limits

— delivering confidence with every drive.

Remap Workflow

Precision, Care, and Custom Calibration

Each remap follows a structured and detailed process to ensure optimal

performance, safety, and customer satisfaction. The complete process typically

takes 2 days, allowing us to properly assess, calibrate, and validate each vehicle.

Day 1 – Vehicle Assessment & Data Acquisition

• 1. Full Vehicle Health Check
• Complete system scan via OBD diagnostics
• Real-time parameter logging to assess the car’s condition before

tuning

• Identify and resolve any existing faults or limitations
• 2. Performance Baseline Runs
• 100–200 km/h and 50–130 km/h measurements
• Used as reference points to validate performance gains post-remap
• 3. On-Road Dyno Measurement
• Road-based dyno session
• Accuracy comparable to traditional chassis dynos (within 1% error)

• Ensures real-world performance evaluation
• 4. High Gear Pulls & Data Logging
• Performed in safe highway conditions
• Captures key parameters: boost pressure, AFR, fuel trims,

temperatures, ignition, timing, fuel pressure.

• Data is reviewed by our calibration engineers to design the custom

tune

• 5. Custom ECU Calibration
• Tuning is performed off-site with attention to your car’s exact setup
• Software is developed specifically for each car

Day 2 – Flashing, Testing & Final Validation

• 1. Flashing the Custom Tune
• ECU is programmed via safe bench mode using licensed tools
• Post-flash log review ensures everything runs smoothly
• 2. Performance Validation
• Repeat of dyno road testing and RaceBox time runs
• Direct comparison with baseline values for measurable improvement
• 3. Final Adjustments (if needed)
• Based on log data, small refinements may be required
• If necessary, the ECU will be reflashed to achieve the perfect balance

• Every car is different — every calibration is developed around your

car's condition and use case, with a focus on reliability, safety, and

real-world performance.

Example: Stock vs Tuned (preFacelift model)

100-200 Stock vs Tuned (preFacelift model)

Stock: 16.28 sec best time (16.78 sec corrected)

Stage 1: 13.11 sec best time (13.41 sec corrected)

50-130 Stock vs Tuned (preFacelift model)

Stock: 6.81 sec best time (6.86 sec corrected)

Stage 1: 5.57 sec best time (5.57 sec corrected)

Facelift i30N with DCT- before and after Stage 1

Facelift (Stage 3) example – before and after

Facelift – stage 3 100-200 comparison

Best time with this car was an impressive 9.39s

RaceBox equimpent for Dyno road and 100-200 + 50-130 measuring:

25Hz GPS (0.04s sampling rate)

Accuracy as low as 10cm between samples.

Over 99.5% measurement accuracy to a hundredth of a second

Data logging via OBD example:

Data logging is done using original and licensed tools.

Data plotting for accurate reading of the data logging:

Stock data logging - detailed

In comparison, we have just below 0.2 bar increase in boost (for a Stage 1) combined with a correct

lambda target value at full load.

Intake air temperatures remained the same: 30 degC (as in this test) after a couple of good 100-200 runs

on the highway- very good result!

Fuel pressure targets remained the same: around 210 bar for both stock and stage 1 -> no additional

stress on HPFP.

For stage 1 tunes, the torque model won’t be modified and the car will run as it will be on the stock map

but with torque and power request increased. Almost as if the Hyundai engineers knew that a lot of

people will go for remapping and they left a lot of room for extra power.

Reading and Writing the ECU:

Bench mode (most used method- non intrusive):

On-car example (the method we use for 99% of the cars).

Preparation time for reading or writing: 10 minutes.

Reading time : 3 min.

Writing time: 4 min.

Same thing as working the ECU on the table:

Writing in bench mode using original licensed tools and external power supply.

THERE IS NO NEED TO OPEN THE ECU for reading and writing.

OBD work is also possible but not as stable as bench mode.

Recovery mode for unsupported software versions (cars newer than 2023) or in case of bricked ECU:

A spare ECU was used in this photo to test Recovery Mode.

Fuel consumption and everyday driveability is not affected as this is a stage 1- only full load

performance is enhanced.

Fuel consumption decrease in low load conditions- example after stage 1:

Route: Bucharest- Bacau Route: Campulung- Bucharest

Pricing (JAN 2026):

Stage 1 or 2: 700 EUR

Stage 3 (modified turbo): 900 EUR

OEM+ setting (all the options except power increase): 250 EUR

GPF / DECAT / VMAX solutions available for <<race cars>>: FREE for all remap solutions

Idle up +50 rpm (for cars with lower torque mount bushing changed): FFEE for all remap

solutions

Exhaust mod/ Hush mod: FREE

Take off assist/ anti stall optimized strategies : FREE for all remap solutions

Stop and Start disable: FREE for all remap solutions

Pops and Bangs custom: FREE for all remap solutions

Improved launch control: FREE for DCT cars

FAN mod: FREE for stage 3 cars/ 50 EUR for stage 1/2 cars

Torque by gear: FREE for stage 3 cars/ 50 EUR for stage 1/2 cars

Multimap/ DCT tune/ Rolling AntiLag: still work in progress- for stage 3 cars only

Mechanical work also available as well as tuning parts.

All remap solutions are fully reversible (lifetime- free of charge) if needed, and all reflashes of

the ECU (without modifications) as well.

For upgrading pricing plans (stage 1 to stage 3 or similar) or any other questions, please contact us.

Q&A - options (explained)

Our custom calibrations are named after the following criteria:

Conservative Tune (Stage 1) (Reliability > Power)

This is for the daily driver who wants a nice, enjoyable performance bump without pushing the

hardware to its limits. We prioritise engine longevity and smooth driving with this one (0-2 revisions

needed for testing).

Standard Tune (Stage 1+ or Stage2) (Reliability = Power)

It delivers most of the available performance from your mods while keeping a healthy safety margin (we

have a lot on these engines as they are really made for tuning). Perfect for spirited street driving and a

fast track day (this usually involves 1-4 revisions).

Aggressive Tune (“Stage 3”) (Power > Reliability)

For those who want to chase maximum performance from their current setup. This requires good

quality fuel and a well-maintained car. You should be comfortable with the fact that chasing maximum

power puts more stress on engine components (this usually involves 3-5 revisions over a timespan of a

couple of weeks, so consider leaving the car with me).

Advanced or Complex Tune (Pushing past the limit)

This is a full-on custom service for heavily modified cars with things like upgraded turbos, water/meth

injection (WMI), port injection, E85 fuel, or Nitrous (NOS). The tuning process is much more involved,

takes longer, and requires extensive data analysis (this usually involves more than 5 revisions over a

timespan of a couple of weeks, so consider leaving the car with me).

Options include:

Start stop disabling

GPF/ CAT/ Max speed disabling

Pops and Bangs (Optional Extra)

These aren't included by default. How we create them is important: we never add extra fuel to

make pops. Instead, we manipulate the existing factory fuel-cut systems.

These cars have a factory "impulse combustion" structure. We work within this system,

allowing us to safely change the length, intensity, frequency, and RPM points of the pops.

Idle Speed Increase

We can give you a small increase, a larger increase, or a static idle speed of around 950 RPM,

regardless of the driving mode. This makes the car feel a lot smoother at idle, especially if you

have upgraded engine mounts, but it might use a tiny bit more fuel in traffic.

Improved Launch Control

We tweak the factory launch control to be more aggressive, adding more torque, boost, and

RPM to allow for harder and more consistent launches. Our focus is on functional, fast launches

rather than just making noise for a 2-step effect.

Take-Off Mod / Clutch Mod (manual cars only)

This makes taking off from a stop much easier by adjusting the "anti-stall" function. You can

often get the car moving in traffic without even touching the accelerator.

Fan Mod

We can change the fan settings to keep the engine running a bit cooler, usually targeting

around 90°C instead of the factory's 100°C, which is great for hard driving.

Exhaust Valve Mod

We can set the exhaust valve to be always open in N-Mode for maximum noise.

Hush Mod

The opposite of the above! We can set the valve to be closed in Normal/Eco at low RPM and

idle, which is great for keeping the peace with your neighbours.

Torque-by-Gear

We can limit the torque in the lower gears (1st, 2nd) to help reduce wheel spin and improve

traction when you're launching the car hard or just don’t want the wheelspin.

Recommendations:

Even though we do the calibration custom for each car, always use premium fuel (RON 98 and

above). We recommend MOL100/ OMV100.

Don’t overlaunch the car from a standstill and/or in the wet. This applies for the stock cars too.

We recommend using polyurethane bushing for the engine mounts.

Change your oil every 5k km with good quality C2/C3 oils such as Shell or Amsoil/ Redline. C3 is

strongly recommended.

Don’t brake hard with the brakes cold as this can induce disc warping, especially if you’re tuned

and you carry more speed than you’re used to.

Get the GPF out if you want the engine to breathe naturally (race cars only ). This way, you’ll

gain at least 30Nm extra after tuning and your car will be happy too.

Never shut the engine after a hard ride. Let it idle for a few minutes to fully cool down. I know

we have an electronically controlled water pump and a fan, but it’s better this way.

Never lean on the gas pedal until fully warm (your oil should reach at least 70 deg).

Thanks!

Călin.