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Project #24149

E78 55494111 55489169 DELCO_E78 55498222 12665803

OPEL - VAUXHALL Car Petrol THERMOSTAT ✓ Completed Oct 15, 2026

Vehicle & ECU

ECUE78
Brand groupOPEL - VAUXHALL
Vehicle typeCar
FuelPetrol
File size3.00 MB 3,145,728 bytes
Completed
Automated processing≈ 20 min
Status✓ Completed & delivered
Original filegm_delco_e78_obd_full_intflash_int_flash_20261015141438.bin
Stock fileStock file in ORI archive (#49278) →

ECM Titanium

Driver · Vehicle · ECUFXXX7191 · OPEL CORSA · E78

Software identification 5

Software number55494111
Identifier 255489169
Identifier 3DELCO_E78
Identifier 455498222
Identifier 512665803

Operations performed 1

  1. THERMOSTAT automated · solution rev 11 · ~20 min

    Adjusts the operating temperature in software on vehicles with an electronic thermostat.

Other solutions for this ECU 10

Every operation below can be ordered for the same E78 file (petrol). Prices are per file in EUR; automatic solutions are delivered within minutes, engineer-assisted ones are prepared by our tuning team.

STAGE1 A performance tune that needs no mechanical changes and stays within the factory safety limits. automatic, 11 ready solutions for this file size · ~15 min 30 EUR
STAGE2 A performance tune for vehicles with hardware upgrades such as a downpipe, intercooler or intake; DPF/EGR delete is a separate operation. engineer-assisted, on request · ~60 min 120 EUR
EGR OFF Disables the exhaust gas recirculation (EGR) system. automatic, 1 ready solution for this file size · ~5 min 15 EUR
LAMBDA OFF Disables the oxygen (lambda) sensors. automatic, 1 ready solution for this file size · ~5 min 15 EUR
DECAT Disables catalytic converter efficiency monitoring and the P0420/P0430 fault codes. automatic, 5 ready solutions for this file size · ~5 min 15 EUR
VMAX Removes the speed limiter (Vmax) or sets it to the desired value. automatic, 1 ready solution for this file size · ~5 min 15 EUR
FLAPS OFF Disables the swirl flaps in the intake manifold. engineer-assisted, on request · ~5 min 15 EUR
POPBANG Creates exhaust pop & bang / crackle sounds; requires a decatted exhaust with few silencers. automatic, 1 ready solution for this file size · ~15 min 60 EUR
THERMOSTAT Adjusts the operating temperature in software on vehicles with an electronic thermostat. done in this project ✓
DTC OFF Permanently disables the fault codes (DTC) you select; you need to provide the P codes to turn off. automatic, instant 30 EUR
REV ORI Restores your modified software file to its original factory state. automatic, stock file in archive · ~120 min 30 EUR
Have a E78 file? Sign in to the ECUHARD platform, upload it and pick the operations — automatic solutions are ready in minutes, 24/7, invoice issued automatically.
Sign in & upload your file →

About this project

E78 is an engine control unit (ECU) supported by our automated file service. This unit is fitted to OPEL - VAUXHALL Car vehicles. Project #24149 was completed automatically by the ECUHARD file service for a OPEL - VAUXHALL Car vehicle running software 55494111 55489169 DELCO_E78 55498222 12665803.

Frequently asked questions

What was done to this E78 file?

Operations performed: THERMOSTAT. The modified file was checksum-corrected and delivered ready to flash.

What is the software version for this E78 file?

This project is for E78 with software numbers: 55494111, 55489169, DELCO_E78, 55498222, 12665803. The same operations apply to other vehicles running the same software.

Can I get the same tuning for my OPEL - VAUXHALL?

Yes. Sign in, upload your original ECU file (E78 or any supported ECU), choose the operations you need and our automated system prepares the file, usually within minutes, 24/7.

I read my ECU with a different tool — will the tuning fit my file?

Yes. Every operation is applied to the file you upload — your own read from your own car — so the tool and the read mode do not matter: the modifications are located by content, not by a fixed file layout. If your file was modified before, our REV ORI (revert to original) module repairs every changed area back to the stock values first — no matter which tool or method read it (KTAG, KESS, Flex, Autotuner, CMD, OBD, bench or boot) (30 EUR). A compatibility problem is therefore impossible.

I have an OBD read — can you tune it, or do I need a bench/boot read?

An OBD read is fine as long as it contains the software area (maps). Upload it; the platform detects the ECU and software number and shows which operations are available for your file. If the read is partial and an operation is not possible on it, you will see that before paying.

I read boot mode with KTAG / bench with Flex / bench or OBD with Autotuner — which read do I upload?

Any of them. Upload the file exactly as your tool saved it (E78 reads are supported in OBD, bench and boot form). The system works on your own read, so nothing has to be converted or matched to a different device.

Do you need the full backup (EEPROM, other sectors)?

No. Only the software-related part of the ECU is used: the maps area — the internal flash and/or the external flash, depending on where the software lives in that ECU. EEPROM and other memory sectors are not needed and are never modified. Keep your full backup for yourself as a safety copy.

How can I be sure the result will be compatible with my ECU?

Because the file returned to you is your own read with only the selected areas changed and the checksum corrected, it flashes back with the same tool and method you used to read it. The software number stays the same; nothing else in the file is touched.

What other operations are available for E78?

STAGE1 (30 EUR, automatic, 11 ready solutions for this file size); STAGE2 (120 EUR, engineer-assisted, on request); EGR OFF (15 EUR, automatic, 1 ready solution for this file size); LAMBDA OFF (15 EUR, automatic, 1 ready solution for this file size); DECAT (15 EUR, automatic, 5 ready solutions for this file size); VMAX (15 EUR, automatic, 1 ready solution for this file size); FLAPS OFF (15 EUR, engineer-assisted, on request); POPBANG (60 EUR, automatic, 1 ready solution for this file size); DTC OFF (30 EUR, automatic, instant); REV ORI (30 EUR, automatic, stock file in archive). Prices are per file.

I have a E78 file — how can I get it done?

Sign in to the ECUHARD platform (solutions.ecuhard.com), upload your ECU file, select the operations you need and confirm. Automatic solutions are delivered within minutes, 24/7; engineer-assisted operations are prepared by our tuning team. Each file is checksum-corrected and an invoice is issued automatically.

Is there an ECM Titanium driver for this E78 file?

Yes. The file is linked to ECM Titanium driver FXXX7191 (OPEL CORSA). Matched: the software range is identical to the driver reference. The driver tells the software where the maps of this ECU software are, so tools that use ECM drivers, including the ECUHARD Tuning Editor, can open the maps automatically.

Do I need to send my original file?

Yes — upload the stock read of your ECU. If you do not have it, our original file archive may have a matching file by software number.