so i put my swap in last week, i wired mpfi, ad vtec, my car will start but it wont stay on, and it on revs to 3k but it is running terrible, it sounds like its only running on 2 cylinders, but all four plugs are firing, im not sure if i messed up the wiring, or if it is a vacum leak, or what. anybody run into this before, i really need help
thanks

 

did you bleed the head and is the timing on??

 

^^
the car was in a 90 civic si a day before i put it in mine, and it ran fine

 

Why did you do mpfi wiring if it was an si? Came with mpfi and are you map and tps plugs swapped? You check for vacumn leaks by spraying brake or carb clean till the idle changes. Spray all around the intake ie gaskets vacumn lines and so forth. What pins did you move on the wiring? What ecu you using?

 

WTF does bleeding the head mean? Recheck your wiring. Are all injectors pulsing?