Done the cleaning of catalytic convertor with some acid & chemical from workshop, it was chocked up to 40%, only i feel pick improved a bit 10% only not much so noticeable difference, as was told by Honda 3s mechanic,,,pick will be lot better but not the case....all just shittt.....waste of time & money....i com to know as told by Honda 3s mechanic, who was working on Sunday for some earning,,,,, that at Fsd. Honda dealership they are paid 10 to 12 thousand salary per month only,,, while he & most of mechanics were working more than 7 years there....as well trainees work there.....so they have lack of interest in work......and ruined our cars ..... only work to get label of Honda etc.........which is really a spot on Honda policy and management.....why they are playing with customer's hard earned money through unskilled & less paid mechanics & trainees......really shame ......while we pay huge maintenance cost to Honda 3s, while they are not paying proper pay to their mechanics & workers.......really shame...& will not go to honda 3s onward... for maintenance purpose......