I've noticed that the turbo performance on my BMW M4 seems to have decreased over time. What could be causing this and how can I improve it?
ReplyHave you tried changing your air filter recently? A dirty air filter can cause decreased turbo performance.
Check your spark plugs as well. Worn or damaged spark plugs can also lead to decreased turbo performance.
Another possible cause could be a boost leak in your turbo system. Have a mechanic perform a boost leak test to determine if this is the issue.
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