CADILLAC CT6 3.0L TWIN TURBO V6 (2016–2019)

STAGE 1 & STAGE 2 PERFORMANCE SOFTWARE

OVERVIEW

Our performance software for the Cadillac CT6 3.0L Twin Turbo V6 (LGW) delivers major improvements in horsepower, torque, throttle response, and drivability. All calibrations are developed in-house and engineered specifically for the LGW twin-turbo platform using advanced load, boost, ignition, torque, and airflow modeling.

Stage 1 is designed for completely stock or lightly modified CT6 models.
Stage 2 is intended for vehicles equipped with upgraded intake and exhaust components to support increased turbo airflow and load.

WHAT STAGE 2 INCLUDES

Stage 2 consists of a complete individualized recalibration of the ECU. All major engine parameters—boost targets, ignition timing, fuel delivery, torque limiters, throttle tables, load targets, and airflow modeling—are optimized to support:

• High-flow or catless downpipes
• Aftermarket cat-back exhaust
• Upgraded cold air intake

This results in stronger mid-range torque, faster turbo spool, smoother power delivery, and maximum safe performance.

FEATURES

• Speed Limiter (Governor) Removal
• Sharper Throttle Response
• Rear O2 Delete (DECAT) Included in Stage 2
• Optimized for 91–93 Octane
• Improved Fuel Efficiency
• Fully Custom ECU Reprogramming
• Enhanced Responsiveness & Drivability
• Optional Datalog Review & Optimization

SOFTWARE OPTIONS

Stage 1 (89/91 Octane)

Requires: K&N Drop-In Filter

Stage 1 + Pops & Bangs (89/91 Octane)

Requires: K&N Drop-In Filter & Cat-Back Exhaust

Stage 2 (91/93 Octane)

Requires: Cold Air Intake & Cat-Back Exhaust

Stage 2 + Pops & Bangs (91/93 Octane)

Requires: Cold Air Intake & Cat-Back Exhaust

BEFORE / AFTER DYNO-STYLE POWER GAINS

Performance Gains Overview

Highlights

• Up to +56 HP over stock (Stage 2)
• Up to +58 lb-ft torque improvement
• Faster turbo spool & improved mid-range pull
• Sharper throttle response
• Stronger acceleration across all gears

TECHNICAL INFORMATION

Production Years: 2016–2019
Engine: 3.0L Twin Turbo V6 (LGW)
ECU Manufacturer: Delco
ECU Model: E82
Time Required: 3–4 hours

Required Parts – Stage 2

• Cold Air Intake
• Cat-Back Exhaust

Recommended Parts – Stage 2

• High-flow or Catless Downpipes

PROGRAMMING OPTIONS

The CT6 3.0TT LGW platform is fully compatible with the BBS OBD2 Flashing Tool, allowing safe read/write through the OBD port without removing the ECU.

BBS FLASHING INSTRUCTIONS (OBD2)

1. Install BBS Software

• Install the BBS Windows flashing software.
• Connect your Senselock USB dongle (if applicable).
• Ensure all drivers are properly installed.

2. Connect to Vehicle

• Plug the BBS OBD cable into the OBD2 port.
• Connect the USB end to your laptop.
• Turn ignition ON (engine OFF).

3. Perform Initial ECU Read

• Launch the BBS software.
• Select the correct LGW/E82 protocol.
• Begin the ECU read process.
• Save the file and upload it to AMT Tuning.

4. Receive Your Tuned File

• Standard turnaround: 24–48 hours.
• Your calibrated file will be emailed or provided via download link.

5. Flash the Tune

• Load the modified file into the BBS software.
• Write the file through OBD.
• Do not cycle ignition or disconnect power during flashing.

6. Switching Tunes

• The BBS tool stores one file at a time.
• Request new versions (Stage upgrades, Pops & Bangs, add-ons) at any time.

7. Stock File

Your original stock file is saved and can be restored at any time.