What is the mostly likly source of the problem-
I am using a fmu right now/stock ecu/2-3 psi max from turbo
It feels like its nearly hitting a limiter..sux cant wait for ems installed so i can run decent injectors-----any input

 

Is vtec not engaging? Perhaps your oil pressure is too low and vtec isn't engaging. It will cause that kind of stutter. Also I'm assuming you have check valves or a missing link installed in between your intake and the map sensor?

 

Do you have a missing link to fool the map from seeing boost?