- Cold air intake: Replacing the stock air intake with a cold air intake system can help improve airflow and increase engine performance.
- High-flow air filter: Upgrading to a high-flow air filter can reduce airflow restriction and improve engine breathing.
2. Exhaust system:
- Header: Installing a performance header can improve exhaust flow and increase engine power.
- Exhaust system: Upgrading to a larger diameter exhaust system can reduce backpressure and improve exhaust flow.
3. Camshaft:
- Camshaft upgrade: Installing a performance camshaft can alter the valve timing and duration to improve engine performance and power output.
4. ECU tune:
- ECU tune: A professional ECU tune can optimize the engine's air-fuel ratio, timing, and other parameters for improved performance and efficiency.
5. Turbo or supercharger:
- Turbo or supercharger: If your 5A engine is turbocharged or supercharged, consider upgrading the turbo or supercharger for increased boost pressure and power.
6. Fuel system:
- Fuel injectors: Upgrading to larger fuel injectors can ensure adequate fuel delivery for the engine's increased performance needs.
- Fuel pump: A high-performance fuel pump can provide the necessary fuel flow for the increased demands of a tuned engine.
7. Ignition system:
- Spark plugs: Upgrading to high-performance spark plugs can improve ignition efficiency and contribute to better engine performance.
- Ignition coils: Upgrading the ignition coils can enhance the spark strength and improve engine combustion.
8. Engine internals:
- Piston and ring upgrade: Forged pistons and performance rings can handle higher temperatures and pressures associated with increased engine performance.
- Cylinder head porting: Porting and polishing the cylinder head can optimize airflow and improve engine performance.
- Valves and springs: Upgrading the valves and springs can improve airflow and support higher engine RPMs.
9. Cooling system:
- Radiator upgrade: A larger or more efficient radiator can help maintain optimal engine temperatures under increased loads.
10. Weight reduction:
- Weight reduction: Reducing the overall weight of the vehicle, such as by replacing heavy components with lightweight alternatives, can improve acceleration and handling.
11. Transmission:
- Transmission upgrade: Consider upgrading the transmission and drivetrain components to handle the increased power output.
