I'm looking to give my BMW 4 Series a boost in horsepower, but I'm not sure where to start. I've read about different performance upgrades, but I'm not sure which ones are worth the investment. Can anyone offer any advice on the most effective way to increase horsepower in a BMW 4 Series?
ReplyOne of the best ways to increase horsepower in a BMW 4 Series is by installing a cold air intake. This allows more air to flow into the engine and can result in a noticeable increase in horsepower.
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