Hyundai · Veloster · JS (2019-21) - Non-Turbo

The Atkinson-cycle Veloster built for economy, not boost

The base JS runs the 2.0L Nu (G4NH) engine on the Atkinson cycle with a high 12.5:1 compression ratio - a layout chosen for fuel economy and thermal efficiency, not outright performance. It's a naturally aspirated commuter that happens to wear the Veloster's three-door body; if you want the engine that actually responds to tuning, that's the 1.6 T-GDi Turbo, which is a completely different car.

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FAQ

Common questions

What's the best first mod for the non-turbo Veloster?

Honestly, on the NA 2.0 the gains from bolt-ons are small. A cat-back exhaust and a panel filter will wake up the sound and free a few kW up top, but if you want a noticeable change in how the car drives, your money is better spent on tyres, brake pads and suspension than on chasing engine power.

Will a tune give me much more power?

Not really. The Atkinson-cycle Nu is naturally aspirated, so there's no boost to turn up - a reflash on this engine typically nets only a handful of kW and won't transform it. The big tuning headroom lives in the 1.6 T-GDi Turbo Veloster, not this variant.

Is aftermarket support good for this car?

It's thin. Most Veloster JS parts development targets the Turbo, so for the NA 2.0 you'll lean on universal/cat-back exhausts, generic intakes and shared Nu/Kona-platform suspension and brake components rather than a deep dedicated catalogue.

Are there any known weak points to watch?

The 2.0 Nu is a generally reliable, low-stress engine - keep up with oil changes and you'll have few mechanical dramas. The dual-clutch worries some people associate with the Veloster don't apply here, since this variant uses a conventional 6-speed manual or torque-converter auto.

Can't find what you need for your JS (2019-21) Non-Turbo? Get in touch — we're happy to help.