1.6 is NOT 12 secs, it's 10.8 compared to the 1.8s 9.9 but in the real world the acceleration is the same it's a known fact.

The 1.8 may be more tunable than the 1.6 but does the slight edge on power justify an engine change? especially when the 1.6 has any other benefits elsewhere lighter being one of them.

Martin