by radsdau » Wed Apr 14, 2010 7:51 pm
The symptoms you describe sound like an ECU crash. This may be because some of the maps you have changed are out of range, and cause an exception, such as a divide by zero. If such an exception is unhandled, the behavior is undefined. It could be a bad flash, but unlikely, if the car ran at all.
Also, did you leave the flash enable connector plugged in? If the ECU crashes, it is (remotely) possible it can overwrite data if this is left on.
Try unplugging the ECU for a few seconds then retry. If it works, but the maps back to standard and try again, more conservatively this time.
Let's hope nothing mechanical / electrical broke in the meantime!
radsdau