Really they are the same to tune and get running "right" .there are plenty of poorly tuned v8's around too. with a 4 or a 6 it is plenty apparent when things are not in order. a v8 disguises these facts much easier. twice the power pulses per revolution vs a 4 banger and usually a copious amount of cubic inches to compensate for a bad tuneup. So short answer yes they are more forgiving of poorly done tuning or upgrades but done right the playing field is level.

OhSix'

There's nothin' faster than cubic inches, Except rectangular dollars.