Got thr car after doing 1st service. Problem of low acceleration was due to leak in inlet pipe of intercooler. Pipe changed. My cryogenic engine is returned back with strong midrange after 2000 RPM. Now there is mad rush of power after 2000 RPM. Thank god ! I was fearing that I will have to use this car also with the same problem of my old FGT " Poor performance but no ECU error" . But another dealer who is 100 km away solved this problem. After getting trial of car I put diesel from COCO. & voila the car started to give more powerfull performance. About power varation mechanic told that,after 1900 RPM EGR valve is closed so you are sensing slight variation in power delievery. But I do not agree. Because I suspect that problem is in Vaccum Accuator. Next time I will check it. I cross that this will not happen again. Aamin!