Namz NR-ViED Adjustable Enrichment Device with AFR Display Air / Fuel Ratio Control Assembly - O2

The Namz NR-ViED is an adjustable O2 (oxygen) enrichment device featuring an integrated Air-Fuel Ratio (AFR) display, designed to optimize fuel mixture on fuel-injected Harley-Davidson motorcycles equipped with high-flow air intakes and exhaust systems. By externally altering the ECM closed loop bias value, the NR-ViED guides the engine toward richer air-fuel ratios in closed loop mode, targeting a range of approximately 14.5:1 to 13.6:1 for improved throttle response and reduced operating temperatures.

Key Features:

• Adjustable air-fuel ratio enrichment — dial in your preferred AFR setting for your specific build
• Integrated AFR display with dual LEDs indicates four fuel mixture zones: Lean (yellow), Normal (no lights), Normal Rich (green), and Very Rich (yellow/green)
• Visual startup blink sequence (1–11 blinks) confirms current AFR dial setting at ignition
• Helps reduce engine operating temperature by 20 to 30 degrees
• Compatible with Twin Cam 88, 96, 103, and 110 cubic inch engines
• Plug-and-play installation — installs in minutes between the O2 sensors and OEM wiring harness, no cutting or splicing required
• Recommended for use with high-flow air cleaners and performance exhaust systems
• Made in the USA
• Alternate/OEM Part Number: 10201716

The NR-ViED is the adjustable, display-equipped version of the NAMZ enrichment device lineup, offering greater tuning flexibility compared to fixed-value models. It is recommended for street-performance builds running aftermarket air intakes and exhausts rather than high-performance race engines.