Im new to tuning so I need some help figuring this out. Car will surge on deceleration. Goes away after driving for 10 minutes or so but will do it every time the car is turned off and restarted. It mainly shows up on my logs as engine torque swinging up and down wildly. Ive attached a log so you guys can see it. One clue I have is that when I step on the brake the surge goes away. Any advice would be greatly appreciated.