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2001 BMW 330i

Question: I have an aftermarket intake for my car? Does it cause to throw a code PO174 ?.

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jhae, Mesa, AZ, August 09, 2011, 06:46
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I have changed my intake manifold, Throttle body gaskets & fuel filter. I have also checked the hoses/vacuum. PO174 (too lean). Pls Help . Thanks Much

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