I've seen a few ACT TSi's available. Do you notice any drawbacks like jarring when switching the cylinders on or off?I have the 1.4tsi act 150 and it really is a good little engine. Very good on economy and decent power when needed. Very refined for a small engine to. Its effortless around town and economical. It doesn't need many revs to get it moving and just glides along smoothly.
Do all 1.4L EcoTSi 150s have ACT? If so, Honest John doesn't suggest any economy savings over a 1.4L 140 ps without ACT (but maybe HJ has mixed ACT with not ACT in the submissions)At low speeds I can hear the engine shuddering and minor lurches as it engages/disengages.