X(rs) is faster in the start and then takes time..11th nails it in rolling as cvts are very different. The net performance is very similar. One difference is that 11th doesn't screem like X when pushed. NVH levels are much better.11th also had way better handling and comfort . Chassis flex is even lesser
For mild tune (2nd selection) , you don't need hobc but is preferable. Internationally, SI needs premiy fuel as it has 18psi peak boost. Rest are all normal. Btw normal is fine as well since performance will automatically bog down..boost comes into play at much higher rpms.
Hobc in gdi engine gives better mileage from past experience but best approach is to use stock map and use normal fuel and when u want extra push, change tune selection and put hobc... maxpower suggested to keep mixing and relax.
U get full control so need to worry on drive requirements and fuel in general. Btw 1kmpl is what u get in hobc and it covers its cost
