2022+ Peterbilt 337 ISB/B6.7L Delete Tuning

2022+ Peterbilt 337 Cummins ISB/B6.7L Delete Tuning

Enhance the performance and reliability of your 2022+ Peterbilt 337 with custom delete tuning for the Cummins ISB/B6.7L engine. This tuning package removes all factory emissions systems and restores full engine output. Compatible with CM2450B ECMs and flashable using EFILive AutoCal V3.

✅ Supported Models:

• Peterbilt 337 (2022+)

• Engine: Cummins ISB/B6.7L

• ECM: CM2450B

If your truck is a 2025+ the ECM may be locked. If you check the ECM sticker and the part number starts with a 6 it is locked.

🚫 Emissions Systems Removed:

• DPF – Diesel Particulate Filter

• EGR – Exhaust Gas Recirculation

• SCR/DEF – Selective Catalytic Reduction / DEF system

• Regen logic and related diagnostic trouble codes

🔧 Key Benefits:

• Increased power and torque output

• Improved throttle response and engine performance

• Lower exhaust gas temps and less downtime

• Eliminates DEF fluid usage and regen-related issues

• Custom tuning available for towing, economy, or performance applications