Extremely Stubborn FI Misfire Issue

fryzia23

Cylinder 2 and 6 is also bank 2 so the sensor could be going bad and causing the misfire. Based on your fuel trims bank 2 is slightly high. It shows slight lean condition. Also you could try to clean your MAF sensors to see if it helps. During cold start, the ecu will run in open loop which is predetermined value(ignores af sensors). Once the warm up cycle ends it gets the readings from its sensors and goes to closed loop. When you're cruising the car is in closed loop and if the sensor is faulty it may cause incorrect a/f mixture. Any time you accelerate or decelerate the car is in open loop therefore the misfire might not show during these conditions. You could do simple test like putting the car into limp mode by unplugging your MAF, let the code show up. Plug the sensor back in but don't clear the code. Drive the car for few miles, let the car warm up and see if the misfire occurs. If it doesn't then you'll know that your spark plugs, coils etc are in good shape.