Fits: Hyundai Veloster N, 6-speed manual and DCT.
Current lead time
Expect a 10–27 day wait after ordering. ECU hardware is limited, so allow the full window.
What this is
A new Veloster N ECU, calibrated in-house by N75 Motorsports and coded to your car, so there is no downtime and Bluelink works like OEM. Your OEM ECU is never touched.
Stages
Stock is around 225–240 whp; all figures are for the Veloster N.
| Stage | Power | Required mods |
|---|---|---|
| Stage 0 | Not rated | None. Premium fuel only. |
| Stage 1 | 275 whp / 295 ft-lbs | None. HKS M45XL spark plugs and an HPFP upgrade recommended. |
| Stage 2 | 285 whp / 310 wtq | HKS M45XL spark plugs; HPFP upgrade recommended; any air intake (we use AFE); fuel injector upgrade. |
| Stage 3 | 300 whp / 345 ft-lbs | HKS M45XL spark plugs; intake; HPFP upgrade; FMIC upgrade; WMI (required); downpipe and catless or high-flow exhaust. |
| Flame Tune | Not rated | Catless exhaust. |
Stage 0 needs no mods: boost peaks at 17–18 PSI, octane learning is disabled and AFR is optimized. We do not raise boost or timing; with octane learning off, ignition timing ends up 3–7 degrees higher across the RPM range. The only change from stock is premium fuel; 87 octane is out. Regular oil is acceptable. Stage 1 is made for a car with no mods and corrects OEM tune issues such as AFR for better fuel economy. Stage 2 is made to last the life of the car; injectors are listed after many injector failures, some off the showroom floor, some failing open and pumping fuel the ECU is not requesting. Stage 3 is the high-boost, high-torque map.
Options explained
- 7000/7200 RPM shift (any stage): shift point raised to 7000 RPM on DCT cars and 7200 RPM on 6-speed cars. Suits EN turbo swaps, which make boost higher in the rev range.
- N Mode pop map: pop sound changed through the ECU, more aggressive than OEM, N Mode only like OEM. A high-flow catted or catless downpipe is recommended.
- Flame Tune (selected under Stage): pop flames tuned in; the car must be catless. Flames come every time you rev. Aggressive, and hard on the motor and turbo.
How it works after you order
- Order with your stage and options and send us your VIN and transmission type (6-speed manual or DCT). That is all we need.
- We code a new ECU to your car, load your calibration and ship it to you. Your OEM ECU stays untouched.
Calibration features
Developed in Canada on our own R&D car and test cars overseas, built in WinOLS5 on our own mappack with a worldwide tuner network. Click the badge to verify our WinOLS licence with EVC.
360 whp / 380 ft-lb on a Veloster N DCT (Dynojet, SAE correction).
- Fuel delivery: factory fuel delivery is not set for high boost, so the ECU pulls power and cuts fuel under high demand; HPFP and fuel maps are optimized to prevent the cut.
- AFR: the factory calibration runs very rich; corrected for more power and better fuel economy.
- Torque, ignition, airflow and VVT: torque maps changed to make more power (you cannot just lift boost); timing optimized for a smoother powerband; air limits and expected manifold charge raised; VVT changed slightly; WOT areas optimized in relation to each other.
- Turbo management: wastegate duty cycle, pressure application and turbo limits changed; boost increased.
- Overboost: stock is typically around 18–20 PSI; lifted to around 25 PSI, removed completely on Stage 3 and up.
- Warmup protection: full power and boost only once engine oil is up to temperature.
- Engine temperature management (Stage 2 and 3): allowed exhaust and intake model temperatures raised so the car holds power toward redline.
- Fan control: coolant fan on at 100% instead of 50%.
- Fault prevention: primary O2 monitoring never triggers a fault code; no codes deleted.
- Octane learning: disabled by default; left on if you ask.
- Assisted launch control: more boost during launch-ready and in first and second gear with LC.
DCT only
- Interface removal (Stage 2 and up): the DCT's power reduction in certain shifter positions is removed.
- Increased clutch pressure: the ECU requests more clutch clamping load from the TCU through torque and TCU-related maps.
- 2-step style anti-lag: aggressive pops and flames during launch control, spinning the turbo to 17–18 PSI.
Before you order
- Run the required mods for your stage. We can tune on the OEM HPFP, but it is a weak point on this car and we suggest replacing it.
- 5w40 full synthetic engine oil and premium fuel are suggested. 87 octane is not allowed.
FAQ
Do I send you my ECU?
No. We code a new ECU from your VIN and transmission type.
Will Bluelink still work?
Yes, it works like OEM on the N75 ECU.
Which stage are the dyno sheets?
Our own Veloster N DCT runs from September 2023. None states a stage, so we caption with the figure alone; the stage table is what we rate each stage for.
Use and liability notice
Stage 2 and 3 raise the OEM exhaust and intake model temperature limits. N75 Motorsports takes no responsibility for damage caused by lifted temperature limits where the car lacks the supporting mods and the motor runs extremely hot.