I need some help, I picked up a cobra with some parts that aren’t California legal. I have since bought maf, injectors and tb, today I switched these parts out along with tune only to have the car idling at 4K. Could it be that the maf is not it’s original maf be the issue? Car was running just fine prior to this change, oh I also added the stock mid pipe with all O2 sensors since it was missing the rears. Where should I start the troubleshooting?