Well when I hit the throttle it loses all power.

Well when I hit the throttle it loses all power at appox 1900rpms if I hold the throttle down it will stall if I let it go it stays running at idle if I unplugg the map sensor I get power back but engine runs rough repalced map sensor didnt work replaced throttle position sensor didnt work doesnt feel like a fuel problem but might be can hear fuel pump working havent checked filter but with map sensor unpluged it gets power back so I think its gettring enough fuel not sure im stumpted please help