qucik question
 

my buddy flashed my car with me with a custom flash from jestr
if i disconnect my battery with my flash that i have on there go away?

Your flash will still be there.

Your ecu is reprogrammed aka reflashed. All of your settings will be there.

It would have to be reflashed back to the stock rom to get rid of it now.

thanks guys

Yea it will still be there. Your factory settings are gonzo.