VEHICLE: 2008 Mazda CX-7 Grand Touring 2.3L, L4, MFI, DOHC, Eng Desg MZR
The engine is a bit low on power at higher speeds and Mass Air Flow (MAF) sensor code P0101 is present.
1. Check for plugged catalytic converter(s). It is not uncommon to have a plugged exhaust after a turbocharger failure.
2. Check boost pressure in the intake manifold to determine if the turbocharger is boosting or not. If not, the turbocharger may be faulty.
Restricted Exhaust System
2008 Mazda CX-7 Grand Touring 2.3L sensor code P0101