Can a Stage 1 Tune Pass the Annual Vehicle Inspection?

[VanNova]

Carrying out a Stage 1 tune on a vehicle can pass the annual inspection. Detailed explanation is as follows: 1. Function of Stage 1 Tune: A Stage 1 tune alters the engine's parameters, primarily modifying the fuel injection quantity, ignition timing, and intake air volume of the engine. Simply put, it releases the reserved power of the engine, enhancing the power output on the existing basis. 2. For Naturally Aspirated Engines: After a Stage 1 tune, the engine's power increases by 5-10%. For turbocharged engines, the power increases by approximately 30%. Compared to naturally aspirated engines, turbocharged engines show more significant power improvement after a Stage 1 tune. 3. Drawbacks of Stage 1 Tune: A Stage 1 tune only changes the engine's parameters and does not affect the annual inspection. However, vehicles with a Stage 1 tune may experience some faults under extreme driving conditions, and in severe cases, these faults might be difficult to repair.