wondering about bcm flash. going to be 125.00 for bcm then 75.00 to flash. should ecm be returned to stock tune?also notice that sounds like antenna and something else turning on after flashing should car do that or is it because of bad bcm (my dome light don't work horn beeps twice like alarm set every so often and so on)it had alot of corrison on plug all the way up to circuit board.always make sure doors closed and no access. on but not sure whats on or off anymore.