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The 8 Most Common BMW N54 Engine Problems – Common Failures and Performance Issues
The 8 Most Common BMW N54 135i, 335i, 535i Engine Problems The BMW N54 engine might be the best tuner engine of all time…at least we think so. Before we even get started, I’m going to drop a plug for a soon-to-come post on why the N54 engine is better and more tuner friendly than a