mijon,
1. Recommended to have an adjustable pulley to fine tune.
2. Idling is not effected as the camshaft is only mild type not full racing.
3. As top power increase so will your FC. There is not such thing as save fuel and more power at the same time assuming your engine is in good tune.
1. Recommended to have an adjustable pulley to fine tune.
2. Idling is not effected as the camshaft is only mild type not full racing.
3. As top power increase so will your FC. There is not such thing as save fuel and more power at the same time assuming your engine is in good tune.

