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Tar Heel Faithful
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In late 2007 the 325i switched to the 3,0 litre Direct-Injection (N53) engine which reduced fuel consumption and emissions and produces a bit more torque compared to the 2,5 litre (N52). Based on my readings of other forums, the N53 DI engine is overall okay but tends to have a few more bugs and issues in respects to the injectors.
 
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