urgent

I have a Nissan Ad Motor QG13 of 2003 with an electronic pedal if accelerating cable my problem is thatv has poor acceleration does not have a pique and it does not happen more than 100 kmh they already made all the oceosecope scanus with an ocellogram check of the sensors everything is well apparently my doubt is the computer my car is mechanical.

If it is sure that the fault is in the injectors more than anything in the nozzles by normal degaste