Originally Posted by RoadKillDMD
Get a tune... ASAP. You can drive around, but stay off the throttle and out of boost. There's a reason you're feeling this 'delay'. Your fueling is tuned for a TMIC. With the FMIC, boost takes a little longer to get to your engine, so it's creating a 'choppy' section in your power band that can be smoothed out with a tune. Resetting your ECU will not magically fix this...
It's a MAF based system. Fueling stays the same. A tune will help, but not for the reasons above.