Cadillac CT6 V - 4.2 V8 Bi-Turbo (2019 -> ...)

Name: Cadillac CT6 V - 4.2 V8 Bi-Turbo (2019 -> ...) chip tuning
Brand: Cadillac
Price: 100.00 EUR
Availability: InStock

2016–present · 558 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	558	600	+42
Torque Nm	868	900	+32

Power gain

+8%

Torque gain

+4%

Ready to feel these +42 hp on the road?

Get your ready-to-flash Stage 1 file for the Cadillac CT6

Order tuning file →

Stage 1 file from €100

Exact price depends on the ECU — confirmed when you upload the file

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	558	585	+27
Torque Nm	868	905	+37

E85 adaptation (no Stage 1)

Just the fuel switch: the ECU is adapted to run Superéthanol E85 (up to 85% bio-ethanol) with no Stage 1 chip on top. You get a small power bump from ethanol's higher octane (~104 RON) and a much cheaper fill-up. Flex Fuel file: the car still runs on regular petrol whenever you want.

Save €3 858 a year at the pump

Get your E85 adaptation file for the Cadillac CT6

Order tuning file →

File from €100

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~26.0 L~~ · €55.28

E85 · 100 km

32.5 L · €29.56

You save ≈ €25.72 every 100 km — about €3 858 a year (over 15 000 km)

E85 uses ≈ +25% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Cadillac CT6, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	558	650	+92
Torque Nm	868	965	+97

E85 + Stage 1 remap

Chip tuning re-optimised for Superéthanol E85: the ignition and boost maps are calibrated to make full use of ethanol's higher octane (~104 RON). Bigger power and torque gains than either Stage 1 on petrol or E85 adaptation alone, plus the same cheap fill-up.

+92 hp and €3 858/year saved — both

Get your E85 + Stage 1 file for the Cadillac CT6

Order tuning file →

File from €100

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~26.0 L~~ · €55.28

E85 · 100 km

32.5 L · €29.56

You save ≈ €25.72 every 100 km — about €3 858 a year (over 15 000 km)

E85 uses ≈ +25% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Cadillac CT6, calculateur d'économies par département →

Stock ECM files for Cadillac 104 stock (ORI) files · €20 per file →