Without any particular technical knowledge, I set off as a guinea pig for Ptronic, and what astonished me right from the start was the increase in the car's energy as soon as you get above 1500 revs. Once this first impression is gone, it is above all the comfort which the extra torque brings which amazes. It gives a sensation of 'tranquil power'. And this is something you usually only get with large engines. As the operation seems neither to be of any risk to the engine, nor to increase polluting emissions, you win all the way round, or almost, as any possible increase in tax or insurance premium is compensated by the decrease in consumption as demonstrated by the on-board computer.
Carl D., Journalist