Pre-Tuning Checklist:

Things to ensure you have a good tuning session.

Wiring: Ensure all engine harness wires are insulated; solder or crimp connections—avoid twisting wires together.
Grounding: Clean chassis grounds to bare metal; battery ground cable should be equal to or larger than the power cable.
Voltage: Maintain 13.5–14V when the engine is running to prevent charging issues.

Fuel Pumps: Clean the gas tank before installing in-tank pumps; use pre- (40–75 micron) and post-filters (100+ micron) for external pumps.
Fuel Pressure: Set base pressure between 40–50 psi; consider a fuel pressure gauge or sensor for monitoring.
Regulators: Upgrade OEM regulators when using high-flow pumps; returnless systems may need conversion for high-boost applications.
Preparation: Secure vacuum lines and ensure at least half a tank of fuel before tuning.

Engine: Verify compression across cylinders (no more than 20 psi variance); check and top off oil and coolant levels.
Timing: Ensure proper installation of timing belts/chains; incorrect timing can delay tuning.
Clutch: Use a clutch rated for your power goals; follow manufacturer break-in procedures for new clutches.

Boost Leaks: Perform a boost leak test; tighten all clamps and fittings.
Vacuum Lines: Correctly route lines for wastegates and blow-off valves; plug unused ports securely.
Boost Control: Use 3-port solenoids for EMS-controlled boost; verify appropriate wastegate spring sizes.
Exhaust & Intercooler: Opt for a 3″ or larger exhaust; consider upgrading to a front-mount intercooler for better efficiency.

Spark Plugs: Use one step colder plugs for performance applications; adjust gap to 0.021–0.028″ for forced induction.
Maintenance: Avoid short trips that prevent engine from reaching operating temperature to reduce plug fouling.

Automatic Transmissions: Ensure the transmission can stay locked in a desired gear during tuning.
Wheel Lugs: Ensure your wheel lugs are tightened before driving the car, especially under performance situations.

MIC-TUNED