Originally Posted by E92mech
I have a new Cobb Accessport coming for my 2010 E92. I have an emergency jump starter from Costco that is essentially a portable car battery that you connect to the terminals under the hood. I'm thinking of using this while I update the ECU with the Cobb for the first download ~20 minutes to make sure my battery doesn't run low.
Is there any problem in doing so, and can I leave the hood of the car up while Cobb is updating? Any problem with opening/closing the hood during update, or does it have to be left alone like the car door?
I only do this only when installing the COBB. I place the charger on first, leave hood open. Then follow instruction as noted. Stay in the car and don't open the door. Hood open is fine.
When you are in the car, it would be difficult to close in the hood without opening the car door.