i currently have a quad race and want to know if it will stack with the edge ez or ts mp-8,which is better and will this provide a little more bottem end (1600-1900) also i believe the quad race is timing and duration(is this correct ?)my truck makes a slight rattling sonud when the quad is turned on under some throttle conditions,but not when turned off,is this injector noise,or timing rattle possibly

 

You do NOT want to stack the quad with an EZ or MP8 they all do the same or similar things. If you want more bottom end get a smarty and use it on an even number with the quad (quad does some timing or at least they used to).

 

NOOOOOOOOOOOOOOOOOOOO Like wap said too much pressure.