Megasquirt Tuner

What This Skill Does

The Megasquirt Tuner skill is a specialized agent designed to assist automotive enthusiasts and professional tuners in managing engine management systems using TunerStudio. It provides expert guidance on the complex mathematical and logical frameworks required to optimize internal combustion engine performance. The skill excels at decoding the 'Required Fuel' equation, adjusting VE (Volumetric Efficiency) tables, fine-tuning spark advance, and configuring critical sensor inputs like TPS and wideband O2 controllers. By acting as a digital tuning assistant, it allows users to interpret datalogs, troubleshoot AFR (Air-Fuel Ratio) discrepancies, and ensure that base engine configuration parameters are correctly set for safe and efficient operation.

Installation

To integrate this skill into your environment, run the following command via the OpenClaw terminal: clawhub install openclaw/skills/skills/boblobclaw/megasquirt-tuner Ensure you have your TunerStudio workspace paths accessible if you intend to perform file-based analysis of .MSQ tune files.

Use Cases

• VE Table Optimization: Automate the calculation of new VE values based on measured-vs-target AFR differentials.
• Sensor Calibration: Walking through the specific resistor biasing and voltage curve inputs required for CLT, IAT, and TPS sensors.
• Datalog Analysis: Identifying lean spikes or ignition knock events by analyzing exported CSV logs from TunerStudio.
• Base Configuration: Setting up trigger wheels, injector dead times, and staging for first-start scenarios.
• Safety Reviews: Reviewing MSQ files to ensure boost limits, RPM ceilings, and failsafe conditions are correctly configured before dyno testing.

Example Prompts

1. "Analyze this datalog and tell me why my AFR is spiking lean at 3000 RPM under load."
2. "I'm setting up 550cc injectors for a 4-cylinder engine; help me calculate the base Required Fuel value for my engine displacement."
3. "My idle is hunting between 800 and 1200 RPM; what tables should I check in TunerStudio to stabilize the closed-loop idle control?"

Tips & Limitations

Always remember that ECU tuning involves physical hardware. While this skill provides expert advice, it cannot physically verify fuel pressure or mechanical timing. Always perform changes in a controlled environment and utilize a wideband O2 sensor. Do not use this skill to bypass engine safety protocols. Always back up your current .MSQ file before applying any suggested changes to your tune.