This dual-channel air/fuel ratio (AFR) module interfaces with the Power Grid Controller to monitor and record AFR on internal combustion engines. Using an NTK sensor, it measures AFR as low as λ = 0.5 (about 7.35:1 gasoline AFR equivalent), with a wide enough range to accurately monitor alcohol-fueled cars, and it outputs 0.5-4.5V for a gauge or data acquisition system.
Specifications:
- Part Type: Oxygen Sensor Module
- Category: Emission Control
- Sub Category: Control Modules
- Output: 0.5-4.5V analog
- Part Number: 7766
MSD Power Grid (PN 7730) and Power Grid Hub (PN 7740) are required; add an Exhaust Pressure Module (PN 7767) for backpressure-compensated AFR on turbocharged applications.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What does the Dual NTK Wide Band O2 Module (PN 7766) do?
It's a dual-channel AFR system that interfaces with the Power Grid to monitor and record air/fuel ratio on internal combustion engines.
What's required to run this module?
An MSD Power Grid (PN 7730) and Power Grid Hub (PN 7740) are both required.
Can it be used on a turbocharged engine?
For accurate backpressure-compensated AFR readings on turbo applications, an Exhaust Pressure Module, PN 7767, is also needed.
Is this part legal for street use?
No. It carries MSD Emission Code 4 and is legal for Racing Use Only vehicles, not street-driven emissions-controlled vehicles.

