I am chasing a up and down idle issue only in park when I put it in drive the issue goes away. Using SCT in closed loop to data log Spark Source and while idling, with the car In park it changes from 9 to 1. When this change happens is when the car idle up and down erratically. My MAF transfer table is dialed in, the ISC duty cycle is at .40 ish and isc integrator is real close to 0. My tps is set to 180 counts. I know it’s suppose to idle with a Spark Source of 9 instead it blips back to 1 which uses the Base spark table.