Bringing up an old topic .. my GTR has recently started to do this.
I've cleaned out my AFMs and also heard the NIStune could be at fault as my O2 sensor was not working?
Got a loan ECU put into my car and it does not drop anymore, however when cruising along every now and then my revs would drop a few hundred RPM and the car seems like tos bogged down. That would only last a few secs before it jumps back up to normal, anyone have any idea?