SR20DET HELP.... PROBLEM<<<<<<

[robdog82]

I have an sr20det and it has been running fine. recently it has started to buck at low boost. after it bucks it spools up fine. When its cold its fine. after 7minutes of driving it starts to buck at low boost. at times i cant get past 2500rpms. When i crank the car it wants to die alot. I changed the plugs but that wasnt the problem. could it be the coilpacks? I checked intercooler piping and its tight. I tightened the manifold. There is no air leak in exhaust or intercooler. There is no smoke from exhaust. could it be the mafs? i checked the turbine and theres no shaft play? help meeeeeeeee

[9240sx]

Check the voltage on the MAF,Check the wire on the left,there sould be three wires,And leave it plugged in when the car is warmed up and the key turned so the fuel pump is on.You sould get 0.8v-1.5v at idle,and 2v at 3,000rpm.