The impact of the modification of the mushroom head on the vehicle is as follows: 1. After the non-supercharged engine is equipped with mushroom head, the air intake will increase, so it is necessary to increase the oil supply accordingly to produce the effect;

2. However, because the unpressurized engine is designed to be pressureless, the increase of intake air and fuel quantity may lead to the unstable operation of the engine;

3. Therefore, some related parts of the modified engine should be replaced with parts of the supercharged engine, otherwise the engine may be damaged.

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