blew my b16 so i went and got a b20 and put my b16 tranny .put a p28 (obd2b-obd1)

the car sometimes loses power around 3000 rpm-4000help but gains it back around 4200.
the only thing the motor is missing is PCV plug that goes from intake mani to valve cover >>>HELP

 

anyone???

 

You stated something in your post that could be a possible problem. Fix that first then come backif it dont work. Running without a pcv is no bueno