[twin turbo]

Like others have said if the motor is breaking up then your running out of fuel or spark or both. Start with the simple things like checking fuel pressure, check fuel filter for clogs, making sure your plug wires are in good shape and routing to the correct cylinders, checking plug gap and condition of plugs, make sure you have a good ground, etc. Also check you're getting full throttle, but I doubt that's causing the motor to break up.