I also got my car remapped from Siddharth. He will charge around 28K but unlimited consultations. (I got a Dasara discount of 8K ) You can go back to him any number of times to fine tune your map. Now the turbo lag for city driving is nearly gone. It is much much better. In fact I have saved a hugh amount of money as I was thinking of buying a Micra diesel. Now no need as car pulls from below 1500 rpm. But you have to insist that he give good torque increase below 2000 rpm. First remap he increased but I was not satisfied. Second remap he gave more boost below 2000 rpm and now the car has really good low end punch. He tries to give remap which don't affect fuel efficiency but I told him I don't care about efficiency or black smoke or whatever, just make it driveable. Anyway even with this there are no fuel efficiency and smoke issues.