Land Chain Failure

Hello friends, I have a tremendous drama with my car, it happens to it, the following works the rather but when I want to accelerate it, it even stops the most important thing is that it is a Peugeot 205 year 1996 with a monopunto injection Magneti Marelli I have already reviewed fuel pressure, filters, flow in the end of everything if anyone has any data of what can be ???????????????
Please give me a little hand that I want to take it out to the street ...........

Hello friend, I give you some pauses: 1.If the gasoline pressure is fine (that means the pressure regulator is fine) 2. That means the gasoline pump is evil (sure the coals is worn x that works badly in high rpm) 3. Review the gasoline relay that does not have a loss of current greater than 0.02 volts. I hope I serve you my advice. CAMS248

Thank you for your advice, they have reviewed a couple of mechanics and they tell me that it can be the computer because the injector pulse is lost when accelerating suddenly, and in doing so slowly accelerates without any problem. It also placed a injector cleaning machine with 3 pressure bar and does exactly the same, disconnect the MAP and you do not feel any change in the engine ... so I am half worried with this bug ...