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      01-13-2014, 09:38 PM   #12
evo335xi
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Drives: 335
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How much it is throwing off your air/fuel might be up to the size of the leak. Your turbo will be working harder no doubt, the question is how much. Look up whistling/siren noises after intercooler installs. They don't have to be Bmw specific either. I might be completely off but imo check it out.