Dyno Tuning Preparation Checklist How do I prepare my car for a Dyno Tuneup? Car Readiness Ensure the vehicle is fully prepared for tuning with all issues resolved beforehand. Check fan functionality, wiring, and absence of excessive smoke or fluid leaks. Ensure proper bleeding of the cooling system. Mechanical/Electrical Repairs Address any mechanical or electrical issues prior to the tuning session. Minor problems may be addressed during tuning, but additional charges may apply. Attendance and Guests Only the car owner should be present during the Dyno session. Limit the number of attendees to avoid distractions. Avoid bringing non-car enthusiasts as they may find the process tedious. Interior Preparation Clear passenger seat/floor space for technician equipment. Ensure accessibility to the Engine Control Unit (ECU). Cleanup Responsibility Avoid spillage of fluids to prevent cleanup fees. Tool Usage Obtain permission before using shop tools or equipment. Tire and Pressure Check Maintain proper tire pressure (30-40psi) for optimal Dyno performance. Use appropriate street tires; consult if drag radials are necessary. Fuel System Replace fuel filter if mileage exceeds 30,000 miles. Arrive with at least half a tank of gas for tuning. Avoid mixing different octane fuels unless discussed prior. Clutch Condition Ensure clutch is not slipping and properly adjusted. Confirm minimal free play in clutch pedal. Check Engine Lights Address any check engine codes before the tuning session. Critical codes affecting performance must be resolved prior to tuning. Ignition System Health Resolve ignition problems such as misfires before tuning. Tune-related misfires may be addressed during the session. Compression Test Verify engine compression and cylinder uniformity. Boost/Vacuum Leaks Check for and fix any boost leaks prior to tuning. Timing Components Ensure correct timing belt alignment and functionality. Timing covers and crank pulleys must be present for timing adjustments. Spark Plugs Use appropriate heat range and gap for the application. Bring extra plugs for easy replacement if necessary. Fluid Levels Maintain proper oil and coolant levels; address leaks beforehand. Cooling System Ensure the cooling system is fully operational with functioning fans. Install a thermostat for consistent performance. Battery/Alternator Health Confirm battery strength and alternator output to prevent electrical issues. Wiring Integrity Solder connections securely; avoid exposed wiring. Ensure proper voltage to critical components like the fuel pump. Exhaust System Repair any exhaust leaks to avoid performance issues. Ensure compatibility for wideband O2 sensor installation if required.