Dear PW fellow members, I need help. Have 2017 Turbo, 48K driven and maintained through Honda.
The car feels sluggish when it's in Eco mode and I press the accelerator pedal slowly you can say 50%. This is not the case when you floor it suddenly 100%. It gets better when I turn off the Eco mode or in S. My brother's 2016 Turbo 73K driven (that too on Total super fuel and still the plugs haven't been changed while i drive on Hi-Octane) responds much better in eco mode even on slighly pressing the pedal the turbo kicks in. Sometimes need to double check if the eco mode is on or not 
So I got mine checked from City sales, and Honda Sugoi Walton too. Both of them said the car is completely fine and the plugs don't need to be changed. What should I do? Just change the plugs and ignore what they say? Or there might be something else to check? At 40K kms, the throttle body, tuning and CVT fluid replacement done at City sales.
I don't want to floor it 100% to enjoy the acceleration, so thank you for the help.