What are the main downsides of aftermarket exhaust for daily driving?

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There are key tradeoffs every daily driver should understand before purchase. The most common complaint is highway drone, a low‑frequency resonant hum at steady cruising RPM, which can become tiring on long trips. Cheap, poorly engineered exhaust systems may develop leaks, bad welds or rust quickly. Full straight pipe or cat‑delete setups often reduce low‑end torque, making city stop‑and‑go driving less responsive. There are also legal and warranty risks: removing catalytic converters violates emissions laws in many regions and may fail inspection. Under Magnuson‑Moss rules, a dealer cannot void the entire vehicle warranty only because of an exhaust upgrade, but they can deny warranty repairs if the exhaust directly causes engine or emissions component damage. Fupower recommends resellers clearly communicate these downsides and avoid selling race‑only delete kits as daily‑driver products.