What is the difference between tuning a car and modifying a car? Are they the same thing?

Car tuning is a necessary part of vehicle maintenance and should be done according to the intervals specified by the manufacturer. Car modifications are attempts by the owner or the owner's mechanic to modify the car to achieve some purpose, such as increasing speed or improving handling or braking. If any modifications are not carefully examined and tested by an experienced mechanic, they may reduce the value and safety of the vehicle.

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Are there modifications that actually increase the value and price of the car? And how do they relate to insurance? Does insurance get voided after some upgrades?

I think aftermarket bumpers can definitely be considered customization that, if installed properly, can even increase the car’s value for resale. Like, i installed an off-road bumper on my 2018 chevy silverado 3500 last month, and so far I’m really happy. At least I don’t have to constantly deal with new dents from tiny rocks kicked up by the cars in front. Insurance has some nuances, because conditions vary between countries and insurance companies, but in general, only get the bumper installed at a good garage, and make sure to tell your insurance about the changes.