ive flashed my ecu through cobb ( Stage 2 upgrade 93 octane ) it was inexpensive and effective at the time. Now picking up an Xede and wondering if I can run it on this ecu or do I need to flash it back to stock??

 

you most likely could. people run Utec's with reflashed ecu's quite a bit. reflash gets you the base map, scaled injectors, and a bunch of other little things that have a big impact on driveability. utec (and probably xede) can allow you to have different maps for different conditions (drag, track, cold weather, significant other driving, etc...) where reflashes don't allow map switching (ecutek only allows boost map switching).