using Ds helps alot in increasing acceleration & u will notice also that the rpm increaded by about 2000 .. without pressing on the accelerator the car will be @ 2500 -3000 rpm

& with the slight press on the accelerator u can take the full power of the motor but donot forget VERY VERY VERY HIGH LEVEL OF FUEL CONSUMPTION

& after shifting from Ds to D , u will find that the acceleration has improved