so, oil level is good, changed again last night to make sure it was clean and fresh. when it decides to shut down, the spark stops and the output light goes out as soon as it starts to shut down, once it decides to shut down it dies exactly as it would on a manual shut down. it seems like it sees a problem and cuts spark, no low oil light or any other problem indication. it never saves itself when it starts to go out. though it will stumble a bit before it goes out. the spark cap looks good and the coil tested fine in ohms. this unit is on its 3rd computer already, every time that went it caused a no start issue. the servo moves fine by hand and the throttle does go up to 3300rpm with eco off, sometimes it ramps up and immediately shuts down and sometimes it will hold 3300rpm for 10-30 secs with a few hiccups then die flat out. but eco will hold steady for an hour. I wish I could afford to try another GCU, the pricing on that fluctuates, was $270 last time I ordered one, now it's $370. I feel like there's some untraceable harness issue somewhere that is destroying computers on this particular unit. it's such a headache. gonna keep testing today.