Audi S3 2.0 TFSI 300hp

Stage 1 chip tuning

Petrol turbo · All · Siemens Simos 12 · CJXC

Stage 1 Results

Stock (hp)

300

Stage 1 (hp)

368

Gain (hp)

+68 (23%)

Torque

380 → 480 Nm +100

* Values are approximate. Contact us for a precise calculation.

Technical Information

Fuel typePetrol turbo

Tuning levelStage 1

MethodOBD2

Engine codeCJXC

ECUSiemens Simos 12, Siemens Simos 18.1

GearboxTemic DQ250 / Temic DQ381 / Temic DQ500

GenerationAll

Reading tools

Alientech KESS3Alientech KESSv2Autotuner AutotunerByteShooter ToolboxCMD CMDFlashDimsport New GeniusMagicMotorsport FlexDimsport New TrasdatabFlash bFlash

About the remap

Stage 1 chip tuning for the Audi S3 2.0 TFSI 300hp increases power from 300 to 368 hp (+68 hp, +23%) and torque from 380 to 480 Nm. Turbocharged petrol engines respond exceptionally well to ECU optimization – adjusting ignition timing, boost pressure, and fueling maps unlocks the hidden potential built in by the manufacturer.

The remap is performed on the Siemens Simos 12 ECU (engine code CJXC) via the OBD2 diagnostic port – no ECU removal required. We use Alientech KESS3, Alientech KESSv2, Autotuner Autotuner and other professional tools. Results are verified with a dynamometer measurement.

Stage 2 is also available for the Audi S3 2.0 TFSI 300hp – the next level of optimization with even more significant power gains. Stage 2 involves ECU calibration tailored to modified intake and exhaust systems. Consult our specialists to evaluate the potential.

Every vehicle undergoes full diagnostics before and after the remap. We keep a backup of the original ECU calibration and guarantee the option to revert to stock settings at any time. JVK PRO is a professional chip tuning service in Riga with 16 years of experience.

Available services

Airbag Diagnostics Gearbox Tuning Return to Stock

FAQ

How much does Stage 1 chip tuning cost in Riga?+

Stage 1 chip tuning at JVK PRO in Riga costs from €200 including VAT; with dyno tuning and measurements – from €350. We confirm the exact price for your engine before starting.

Is Stage 1 safe for the engine?+

Yes. Stage 1 is an optimization within factory safety margins. The remap is done via the OBD2 diagnostic port without opening the ECU. Results are verified on our dynamometer.

How long does it take?+

Usually 2 to 4 hours, including diagnostics, remapping, and a dyno verification run.

Can the original software be restored?+

Yes, we keep a backup of your original ECU file. Reverting to stock is possible at any time.