I have hit fuel cut a couple of time's in mine, an the car feel's like all power is gone then it come's strait back again...
Have been told its not a good thing to hit it to much...
Mine is quiet smooth at top speed no real shake's at all...
fuel cut and speed cut are 2 diff things, fuel cut is to do with engine
soeed cut is to do with how fast your going (as it is in the name lol)
speed cut on most jap cars feels like front susp has just colapsed and car looses speed
it was on the r32 anyway never hit it in starlet so wouldnt know (not top speed limited)