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Re: P0171
Posted to Technical Discussion Forum on 1/6/2019 1 Reply

I am coming up with an N54B30 twin-turbo GDI with dual VANOS but no Valvetronic. Am I correct?

My thinking on a MAP system is that an intake leak, either from the PCV or otherwise, would tend to reduce intake pressure and cause a higher fuel delivery; hence ... Login to read more.

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