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International Automotive Technicians Network
Re: 2009 Mazda CX7 GDI 2.3 turbo over fuelling
Posted to Technical Discussion Forum on 1/29/2021

The first thing that comes to mind is a boost leak. Look at the MAF sensor and see if the reading jumps up at the same time. May have a leak at higher pressures that will not be evident at idle or low boost. Login to read more.