alright guys I have a 17 mustang with a mcleoud rst with lightened flywheel a vortech v3 and a boss manifold. ever since I put the blower on I get a random misfire on startup with no actual misfire. I already did a crank relearn with a snap on scanner. I'm somewhat scared to do it again as I've had a mustang get the crank relearn code stuck with no way to turn it off and it wont take the relearn without flashing back to stock. Only problem is there is no way in hell the car will startup on a stock tune. What else could cause a random misfire on startup??? What are the chances of the crank relearn not taking properly the first time I did it and requiring another one if I haven't changed anything to cause the engine to spin at a different rate?