Race Gear What Each System Is Designed To Do
The AiM Solo 2 DL is a self-contained GPS lap timer and basic data logger with a built-in display. You mount it, connect 12V power, and it starts logging GPS position, speed, and lateral G — no laptop required in the car. AiM's Race Studio 3 software handles post-session analysis on a laptop. It is designed for drivers who want accurate lap times and basic data with minimal setup complexity.
RaceCapture/Track (by Autosport Labs) is an open-platform embedded data logger that requires a separate display (usually a phone or tablet running the RaceCapture app via Bluetooth). It is designed for drivers who want deep customization — logging OBD-II channels from the ECU, connecting multiple sensors, writing custom alerts, and streaming live data to a pit crew. The trade-off is that setup takes more time and technical comfort.
GPS Accuracy and Lap Timing
AiM uses a 10 Hz GPS receiver with predictive filtering — in practice, lap time accuracy is typically within 0.01–0.02 seconds of a wired optical beacon. The Solo 2 DL's internal GPS starts acquiring satellites quickly (under 90 seconds in most conditions) and auto-detects known tracks from its built-in database.
RaceCapture/Track uses a 10 Hz GPS module as well, but accuracy depends heavily on antenna placement. Mounting the antenna on the roof or windshield base is critical — a dashboard mount close to metallic surfaces can degrade signal. In controlled testing on the same track, both systems post comparable lap time accuracy when the RaceCapture antenna is properly placed. Where AiM pulls ahead is ease of consistent results — less variability between sessions because the GPS module is fully integrated and tuned by AiM's engineering team.
Channel Logging and Sensor Integration
This is where the two products diverge most sharply:
- AiM Solo 2 DL: logs GPS-derived channels (speed, position, predictive lap delta) plus 2 analog inputs and 1 RPM input. With the optional SmartyCam integration you add video overlay. Limited ECU expansion without upgrading to AiM's more expensive MXS or MyChron5 units.
- RaceCapture/Track: logs GPS, 8 analog channels, 4 digital inputs, 4 timer inputs, CAN bus (OBD-II passthrough), and supports expansion modules for additional analog sensors. You can log throttle position, coolant temp, oil pressure, and RPM directly from the ECU on any OBD-II equipped car.
If your goal is understanding car behavior rather than just lap times, RaceCapture's channel depth at its price point ($429–$600 depending on version) is remarkable. Nothing else logs 8 analog channels with CAN at that price.
Display, Software, and User Experience
AiM's Race Studio 3 is mature, polished analysis software. Overlay multiple sessions, compare channels, view track maps with speed color-coding, generate PDF reports. The learning curve is moderate but the results are professional-quality. The Solo 2 DL's built-in display shows lap times and basic channels clearly without glare issues common to phone screens.
RaceCapture's app-based display is flexible — you build your own dashboard with any combination of channels — but it requires a compatible Android or iOS device mounted in the car, and phone screen readability in direct sunlight is a real problem. The desktop analysis software (RaceCapture Analyzer) is functional but less polished than Race Studio 3. The open-source nature of the platform means a strong community contributes plugins and integrations, which is either an advantage or an overhead depending on how technically inclined you are.
Which One to Buy
Buy the AiM Solo 2 DL if you want the fastest path to accurate, reliable lap timing and basic data with no setup headache. It is the standard tool in HPDE paddocks for good reason. Budget: ~$450–$500 new.
Buy the RaceCapture/Track if you are mechanically and technically comfortable, want to log ECU data on an OBD-II car, and are willing to invest time in configuration. The platform grows with you — you can add sensors over time without buying a new unit. Budget: $429–$600 plus the cost of a dedicated tablet or phone mount.
For pure lap time comparison, the AiM wins. For data nerd capability per dollar, RaceCapture wins. Many serious club racers end up with both over time — Solo 2 DL as a grab-and-go unit, RaceCapture wired into a dedicated track car.
