Big Factory Cam (BFC) Custom Feature

NAMR custom feature, available through GropeTuned, an official Atlas commercial tuner.

NAMR feature description

Emulate larger cams on your FA-powered WRX with our physically modeled take on what is popularly called ghost cam.

With careful tuning and airflow modeling, NAMR’s BFC accurately replicates the physical operating condition that exists when large cams are installed into your motor, resulting in a choppy idle.

NAMR’s Big Factory Cams does not continually modulate spark or valve timing or sacrifice oil pressure to operate unlike many other ghost cam features, making BFC a more reliable way to have that choppy idle sound for the long-term.

Bring more spice into your tune and turn heads with an unexpected sound using BFC!

To install the Custom Feature, please follow this guide.

Feature requirements

• Requires: Atlas 2026.2+

Digital software feature by NAMR. Custom calibration and any required hardware are sold separately.

Delivery and purchase terms

GropeTuned will manually email your feature files and VIN-specific license details after processing your order. Delivery is by email, not an instant automated download. Use an email address you can access at checkout.

Choose the correct chassis and enter the vehicle’s 17-character VIN before purchasing. This license is for the specified vehicle.

Final sale. No change-of-mind returns or refunds. Read the refund policy.