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For Sale *Sold* BMS JB4 2019+ Cadillac

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XRAY

‘23 CT5-V
Joined
Mar 5, 2026
Messages
4
Location
Grand Haven, MI
V-Series Cadillac(s)?
‘23 Cadillac CT5-V
I have a couple month old BMS JB4 for Cadillac 2019+ Kit originally purchased through TapOut Tuning.
*Sold* OBO shipped

JB4 Power Gains, Features & Benefits

• Power gains up to 60hp and 80tq to the wheels on a stock vehicle, and up to 100hp on CT4-V Blackwing
• Improves 0-60 and quarter mile times.
• Includes multiple tuning maps for different fuel types.
• Quick plug and play installation.
• Supports E85 ethanol blends.
• Reads and deletes fault codes.
• Displays and logs up to 40 engine parameters.
• Boost by gear control for improved traction.
• Controls exhaust flap operation on supported vehicles.
• Compatible with the free JB4PRO app.
• Offers better performance and safety than basic chip tunes.
• Full CANbus integration.
• Runs as smoothly as stock.
• Compatible with all driving modes.
• No impact on fuel economy during normal driving.
• Requires 91 octane or better for performance gains.
• Not VIN locked and fully removable.
• Includes billet aluminum enclosure.
• Designed and assembled in the USA.
• 5-year warranty.

JB4 Vehicle Fitment
Available for Luxury, Premium Luxury, Sport, V-Series models, and CT4-V Blackwing.

Cadillac
• 2020+ Cadillac CT4-V Blackwing 3.6L Twin Turbo V6
• 2020+ Cadillac CT5-V 3.0L Twin Turbo V6
• 2020+ Cadillac CT5 550T 3.0L Twin Turbo V6
 

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