HP Tuners Brings Custom Tuning and Performance Control to Cadillac Blackwing Sedans
Published on: February 24, 2026Categories: New Vehicle Support, Press Releases
BUFFALO GROVE, IL, February 24, 2025—HP Tuners is expanding its performance lineup with new model year support for the Cadillac CT5-V Blackwing and CT4-V Blackwing, delivering custom tuning and diagnostics for Cadillac’s most powerful and track-focused sedans.
This release enables full calibration, diagnostics, and data logging access through the E99 ECM, giving tuners and enthusiasts the tools to fine-tune power delivery, throttle response, and drivability.
Key Details
- Controller(s): E99 ECM (Global B)
- Supported Vehicles: 2025–2026 Cadillac CT5-V Blackwing ; 2024–2026 Cadillac CT4-V Blackwing
- Upgrade Required: GM E99 ECM Service
- Credits Required: 8 Universal Credits per ECM
- Devices Supported: MPVI3 and newer
- Remote Tuning: Supported via RTD4
Designed for drivers who demand more from their vehicles, HP Tuners’ Blackwing support brings professional-grade control to Cadillac’s highest-performance V-Series platforms.
For more information, visit www.hptuners.com.
ABOUT HP TUNERS—HP Tuners is the leading diagnostic and calibration solution for vehicle aftermarket performance with over 20 years of expertise. From diagnostics, data logging, scanning, custom calibration, and more, HP Tuners offers the most comprehensive solution for OBDII-equipped import, domestic, and powersports vehicles. Connect with HP Tuners at www.hptuners.com.