is your ignition timing and cam timing set the same ? did you happen to have the timing on your car before different than the previous similar car before you put the turbo kit on ? sounds like not enough timing has been pulled to me. ive been down that road before, check your plugs, make sure your not detonating and pull some timing. hondata may already have that done but if your distributor cap is in a different spot than the other car that could be the entire problem right there. could have too much timing pulled or you could be god forbid advanced to far which would do nothing but cause detonation and stuttering.