Data Acquisition Module

What Is a Data Acquisition Module?

A data acquisition module — often called a DAM or DAQ module — is the critical electronic interface that collects, translates, and transmits real-time sensor data within a motorsport or performance data logging system. Think of it as the bridge between your vehicle's many sensors (measuring everything from engine RPM and oil pressure to shock travel and exhaust gas temperature) and your central data logger or digital dash display. Rather than running dozens of individual wires back to a main unit, data acquisition modules allow discrete groups of sensors to communicate over a shared network, keeping wiring clean, weight down, and data fast.

Why Data Acquisition Modules Matter

Modern racing has evolved into a data-driven science. Improvements that once took seasons of trial and error can now be achieved in a single test session — but only when you have the right hardware capturing the right information. A data acquisition module ensures that critical parameters like fuel pressure, suspension travel, wideband oxygen readings, and g-force are recorded with the precision and sample rates that serious tuning demands. Whether you're chasing a tenth on the drag strip, dialing in a road course setup, or monitoring engine health during a long oval event, these modules expand what your system can see and understand.

When shopping for data acquisition modules, key considerations include compatibility with your existing data logger platform (V-Net, CAN bus, or analog), the number of sensor channels you need to add, sample rates, and whether the module comes with integrated sensors or connects to external ones. Data acquisition modules range from single-channel specialty interfaces — like shock travel or wideband O2 controllers — to multi-channel universal expansion boxes that dramatically increase a system's capability.

Top Brands in Data Acquisition Modules

Racepak is the definitive name in motorsport data acquisition. Racepak data acquisition modules are built around their proprietary V-Net system, which allows sensors and interface modules to daisy-chain together over a single cable, dramatically simplifying installation. Their modular ecosystem spans everything from GPS modules and wideband controllers to shock travel interfaces and EFI CAN adapters — all designed to feed data into Racepak's V300, V500, G2X, and IQ3 platforms. Racepak has been developing purpose-built data logging hardware since 1984, and their products are trusted by competitors across drag racing, circle track, road racing, and offshore powerboat disciplines.

MSD brings data acquisition capability directly into its ignition control ecosystem. The MSD Power Grid system, for example, incorporates built-in data logging for engine RPM, timing, and launch parameters — and integrates seamlessly with Racepak data recorders via CAN bus, making it a natural fit for racers who already rely on MSD ignition control and want to expand their data picture without adding a completely separate system.

Building the Right Data Acquisition System

• Start with your data logger platform — modules must be compatible with your logger's communication protocol (V-Net, CAN, or analog input).
• Identify the channels you need — shock travel, EGT, wideband O2, GPS, and pressure transducers are common expansions.
• Consider sample rates — high-speed events like drag racing benefit from modules that sample at 100 samples per second or faster.
• Plan for expansion — a modular approach lets you start with essential parameters and add channels as your program grows.