pi intake swap

  1. M

    Having a Misfire issue after PI intake swap on 96 Mustang V8

    So, I did the intake manifold swap for my car. Went from a crappy Dorman intake for a non PI motor and put on the Ford Racing Performance Intake manifold. It was actually used and off of a 2002 Grand Marquis but same crap right. I now have a misfire. Yesterday she ran like a top! Now...