r/OBD2

Hey everyone,
A lot of users from my previous CarPlay post requested OBD2 support, so after a lot of work, the feature is finally live in Speedometer: Driving Tracker.

You can now see and analyze real-time OBD2 vehicle data directly from CarPlay, iPhone, iPad, Mac, and Apple Watch (via live activity).

One thing I personally found really interesting while testing was seeing how different driving styles affect engine behavior throughout an entire trip, not just live gauges while driving.

For example, things like:
• Engine Load
• RPM
• Throttle Position
• Coolant & Oil Temperature
• Fuel Usage
• Mass Air Flow
• Intake/Ambient Air Temperature
• And more

I added a sample trip summary screenshot below showing how the app now visualizes engine performance for a drive.

It even works with automatic trip recording through Shortcuts automations (when OBD2 device is connected), so trips can start recording automatically without manually opening the app.

One important note: every car exposes different OBD2 sensors, so some vehicles may not provide all data points shown in the screenshot.

The goal wasn’t just to make another OBD2 gauge app, but to make driving history and car data feel more visual, insightful, and actually enjoyable to revisit later.

Other existing features in the app:
• CarPlay trip tracking
• 3D route playback
• Speed-colored trip replay
• Video recording with speed + map overlays
• Fuel, maintenance, and expense tracking
• Vehicle-based analytics & comparisons
• iCloud sync across Apple devices
• Privacy-first experience (no ads/tracking/signups)

Now it’s becoming one of the most comprehensive driving tracker apps available on any platform, whether iOS or Android! (iOS version is live, Android version is in progress)

Would genuinely love feedback from fellow car enthusiasts on what data, analytics, or visualizations you’d like to see next.

First time using mode 6 in forscan. Should I be concerned about those misfires? 2021 ford f150 3.5 eco

I decided to test 4 popular OBD2 adapters on my Toyota Corolla 2015 GLI, to see which one actually delivers on its promises.
I used Car Scanner Pro app for all tests. Prices ranged from 20 SAR ($5) to 80 SAR ($21).

The Contenders (See Images):

1. OBD Advanced (~$5 - Amazon)
2. ELM 327 Mini (~$5 - AliExpress)
3. KONNWEI (~$21 - Amazon)
4. KINGBOLEN WiFi (~$15 - Amazon)

The Breakdown:
1. Features & Coding (The Biggest Difference)
• The Winner: KINGBOLEN (Device #4). It was the only one that unlocked the full "Coding & Service" menu. I could access anti-theft settings, light configurations, and power window tweaks.
• The Failures: Devices #1 (OBD Advanced) and #2 (ELM 327 Mini) were completely useless for coding. The app flagged them as "Faulty" immediately.

2. Performance & Speed
• KINGBOLEN takes the lead again. Because it connects via WiFi, the Live Data refresh rate is much higher compared to the Bluetooth models. Pairing is instant and very stable.
• KONNWEI (Device #3) is very well-built and stable for basic diagnostics, but couldn't match the Kingbolen in feature access.

3. Technical Stability (The Proof is in the Errors)
If you look at the "ELM327 errors" screenshots I attached:
• Devices #1 & #2 show hundreds of "Incorrect line ending" errors (over 370 errors!). This is a clear sign of a cheap, fake firmware chip.
• Device #4 (KINGBOLEN) shows almost zero errors, meaning it handles the ELM327 protocol correctly.

The "WiFi" Trade-off (Important!):
There is one catch with the KINGBOLEN: Since it uses WiFi, your phone might disconnect from your cellular data (4G/5G) while you're using it.
This can be a bit annoying if you need to Google a fault code or watch a YouTube tutorial while still connected to the car. You'll have to toggle back and forth.

Final Verdict:
• Best Value: KINGBOLEN WiFi. At $15, it outperformed the more expensive $21 Konnwei and unlocked all professional features.
• Avoid at all costs: Anything in the $5 range (Devices #1 and #2). They are literal e-waste and can't do anything beyond reading very basic engine codes (if you're lucky).