Opel Signum 1.9 CDTI 120 hp — Stage 1 file (+30 hp)

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Chip tuning for Opel Signum 1.9 CDTI 120 hp ECU

Opel Signum (2003) 1.9 CDTI 120 hp — mass-market diesel engine of the passenger segment of the Stellantis group (Германия, 1862). Stage 1 chip tuning raises power from 120 to 150 hp (+30 hp, +25%) and torque from 280 to 340 Nm (+60 Nm). This engine ships with different ECU variants: Bosch EDC16C39, Bosch EDC16C9. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 2 configurations · 2 ECU variants. Diesel engines built in 2003 — the era of classic Common Rail without strong encryption.

Before 2017, Opel shared platforms with Chevrolet and Buick as part of GM. Opel is a German carmaker from Russelsheim, founded in 1862 (originally making sewing machines). Opel has been part of the Stellantis group since 2017 (formerly GM Europe). HDi and BlueHDi are Citroen's badges for direct-injection turbo diesels.

Within Stellantis, ECUs are standardised, so Opel files (from 2017 on) often work on Peugeot/Citroen. The Opel community in Germany and the UK generates a large volume of Stage files. On Opel diesels, Stage 1 delivers a noticeable torque gain. The French Citroen community has a large pool of ready-made Stage files. Mid-range Citroen engines are a mainstream chip tuning subject in Europe.

Frequently asked questions

How much does the power of the Opel Signum 1.9 CDTI 120 hp increase after Stage 1?

Stage 1 chip tuning on the Opel Signum 1.9 CDTI 120 hp boosts engine output by 30 hp: from 120 to 150 hp. Torque rises from 280 to 340 Nm (+60 Nm).

What changes in the Opel Signum ECU after Stage 1?

Stage 1 on the Opel Signum 1.9 CDTI 120 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +30 hp with no hardware changes.

Is a Stage 1 remap safe for the 1.9 CDTI 120 hp?

Stage 1 on the Opel Signum 1.9 CDTI 120 hp is developed while keeping the factory AFR, knock control and temperature limits. Engine life is preserved provided regular maintenance is carried out.

How does Stage 2 differ from Stage 1 on the Opel Signum 1.9 CDTI 120 hp?

Stage 2 for the Opel Signum 1.9 CDTI 120 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

How many ECU variants does the Opel Signum 1.9 CDTI 120 hp have?

The Opel Signum 1.9 CDTI 120 hp has 2 ECU variants: Bosch EDC16C39, Bosch EDC16C9. Before flashing you need to read the specific unit — calibration is done for the exact hardware/software.

Does Stage 1 void the warranty on the Opel Signum?

Stage 1 on the Opel Signum voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Opel Signum 1.9 CDTI 120 hp done?

The full remap cycle for the Opel Signum — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Opel Signum?

The original Opel Signum ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Opel Signum 1.9 CDTI 120 hp?

The cost of Stage 1 for the Opel Signum 1.9 CDTI 120 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno