So here is the story as i was driving the car started to lose power turn it of and when im trying to start it it goes to 2000 rpm and after 5 seconds it struggles to keep the rpm up but when i try to give it gas the rpm go down and finally the engine turns off i have changed the spark plugs same problem

 

Might be map sensor.

 

I have a power fc + commander when i was driving and was giving it gas it was boging but suddenly it boosted normally and again with the bogging

 

I'd suggest getting rid of the power fc and commander.

 

Why is that i never had problems what do you suggest

 

You are on a dower fc setup. The factory evo ecm uses the map sensor and cam sensor to trigger the fuel pump relays. For me my map sensor was bad which caused alot of problems. Do you have a wideband? You need to keep an eye out for lean conditions and it is easy to test the fuel pump.

 

Its an evo 6 so i dosent have a map sensor but with the instalation of the power fc the guy who tuned the car canceled the maf sensor i dont know if he installed a map sensor also when i turn the ignition to the on position i hear a loud whining im guessing its the fuel pump but sometimes that whining is a little bit faint i have removed the fuel line from the fuel rail and put it in an empty bottle 0.5 litter i turn the switch to the on position and fuel came but to get the bottle to half 250ml i had to turn the key three times on and off fuel seams ok no water just clear gasoline.im wondering is it ok to put compressed air in a vacuum line to see if i have a leak somewhere