Paccar MX-11 / MX-13 — Remote Tune

Remote ECM calibration for the Paccar MX-11 and MX-13 diesel engines, found in Kenworth and Peterbilt Class 8 tractors. All three calibration stages are available to align the tune with your load cycle, route demands, or performance goals.

What's included

• Stage 1 — Economy and baseline optimization. Fuel mapping and torque curves are recalibrated to improve low-end response and fuel efficiency at stock hardware levels.
• Stage 2 — Enhanced performance. Increased torque output and improved throttle response under loaded conditions.
• Stage 3 — Maximum calibration. Full-range tuning for peak output; emissions-equipment considerations apply and will be confirmed before the session.

How it works

Tuning is performed via a live TeamViewer remote session. A compatible heavy-duty diagnostic adapter and a Windows laptop connected to the OBD/J1939 port are required. ECM compatibility is confirmed at booking.

For closed-course, competition, and off-road use only. Not intended for use on public roads where emissions regulations apply.