—installing a cold air intake, swapping to a performance air filter, or upgrading spark plugs can improve efficiency and power while avoiding labour costs. Partial wraps like a roof or hood treatment can achieve a luxury or sport aesthetic at a fraction of a full wrap’s cost. Interior upgrades that increase comfort and utility also preserve resale potential more effectively than flamboyant exterior mods. A quality performance air filter, upgraded spark plugs or a basic cold air intake can raise responsiveness and fuel economy for relatively little. Budget Car Customization — Frequently Asked QuestionsQ: What should I change first if I want to customize my car on a tight budget?