MORE THAN JUST SPIN
In making the change to a turbo-petrol four for CX-9, Mazda’s engineers needed solutions to ensure virtually zero lag and appropriately crisp throttle response. It came with the introduction of a raft of measures, including a manifold design that, at low revs, harnesses the energy of the individual exhaust pulses from each cylinder to keep the turbine spinning, thus reducing lag. Also helping is a super-high 10.5:1 compression ratio, which required innovative cooling techniques to avoid detonation. Upshot? It works: this is a brilliantly responsive engine.
“TERRIFIC CHASSIS REFINEMENT. RIDE AND HANDLING VERY WELL SORTED” JOHN CAREY