My nx boggs out when i open the throttle fully, and engine dies when i come to a stop in nutural, i have to find that happy medium to be able to get up and go, i cant just step on the gas, if i do then it feels like im towin a parashute. i have no idea what it is, ive cleaned the air filter put in a new (used but good) maf, but nothin, feels like the air fuel just isnt right....any ideas? :confused:

fuel pump? or fuel filter? could i be starving the engine?

could be a few things tell us more about the car whats in it? mods stuff like that and ill do my best to come up with a soultion for you..

not to sure of the mods, just bought it 2 days ago and runs like @$$, but new headers, intake, and thats about it engine wise, its in my nx2k, and it had a junkyard motor in it so i have no idea the miles, im just tryin to get it running decent enough to blow the motor to swap it with my spare (that i actually trust)