I'm sure your old man wouldn't mind you modding your car in a sense to make it handle better thus safer. I have gauges in my car and hell i barely even look at them only on the odd occasion when I feel like there is something wrong with the boost. I'm sure you'd rather be looking at the road then how much boost your car is running

Like all have said, its your car and customize it to suit your wants/desire and not others.

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02 STi