Logalyzer is a professional datalog analysis tool for automotive tuning. It automatically analyzes your ECU datalogs and detects critical issues like knock, lean conditions, fuel pressure problems, and more. We support multiple ECU types including DS1 (Audi 4.0L V8, 2.5L I5) and MHD (BMW N54, N55, B58).

After logging in, go to your Dashboard and select the appropriate ECU type for your vehicle. Click the upload area or drag-and-drop your CSV datalog file. The analysis will complete within seconds and you'll see a detailed breakdown of any issues found.

We currently support CSV files exported from:

• DS1 (Audi vehicles)
• MHD Flasher (BMW vehicles)

Make sure your datalog includes the required columns for analysis. Check the violations reference page for your ECU type for details.

Logalyzer checks for multiple critical parameters:

• Knock Detection - Timing pull and knock counts
• Air-Fuel Ratio (AFR) - Lean/rich conditions
• Fuel Pressure - High and low pressure fuel system
• Boost Pressure - Target vs actual comparisons
• Injector Duty Cycle - Pulse width monitoring
• Engine Load - Overload conditions

• Critical (Red) - Immediate attention required. May cause engine damage.
• Warning (Yellow) - Should be addressed soon. Monitor closely.
• Info (Blue) - Informational findings. May indicate tuning opportunities.

Yes! Each analysis has a unique share link that you can send to your tuner, mechanic, or post in forums. The shared view shows all the same information but doesn't require login.

Each datalog analysis uses 1 token. Tokens are included with your subscription and reset monthly. Unused tokens do not roll over to the next month.

• Basic ($10/mo) - 5 analyses per month
• Standard ($20/mo) - 10 analyses per month
• Pro ($100/mo) - 50 analyses per month
• Heavy ($500/mo) - 250 analyses per month

Yes, you can cancel anytime. Your subscription will remain active until the end of your current billing period. Contact us if you need assistance with cancellation.

Audi (DS1):

• 4.0L V8 TFSI - S7, S8, A8, A8L, RS7, RS6
• 2.5L I5 TFSI - RS3, TTRS

BMW (MHD):

• N54/N55
• B58

Yes! We're actively working on adding support for more ECUs and platforms. If you have a specific request, please contact us and let us know.