As you said, these are all the pieces already. If what I'd figure is your question it's easy to answer:
"How much damage would I do if I fire for $Length time?"
$Length * $RoF = X rounds
X rounds * $damage = gunDamage
X rounds * $DOT% = avgDotAmount
DoTs are smart in this game, they all have their separate timers and can stack independently from one another. This makes the damage as intuitive as possible:
dotDamage = avgDotAmount * ticks(element)
totalDamage = (gunDamage + dotDamage) * multiplier(element)
As this was far too easy to answer, I can only assume your question would be like
"When can I stop firing, knowing that my DoTs will kill the enemy?"
To which the answer would be "Never, unless the target isn't currently affected, then keep firing."
To us human player at least; for all the data is there in the fountain of numbers that spew from the target you are perforating with bullets. Would we be perfect computers, we could see when a new dot starts ticking(it wouldn't have a previous tick before it) and thus know exactly how many ticks are left. Being human, all we can say is "it's on fire" or "it's not on fire." This makes knowing for SURE your target is going to die impossible, the best one could do is make a normal distribution graph(wiki) with the probabilities if your target will die.
If that's really what you'd want, I could run it through some model, but it's still gonna be a pretty useless graph. Input the specific gun and skills you're using, and you could get a graph with probabilities mapped vs dotDamage. Even if you could watch that while shooting things, you can only guess how much health your target has left.
If instead, and my final guess, the question would be "How much do I overkill?" that amounts to the same, as that is also "Amount of dotDamage still to be done."
It's called Seraph weapons
and will be acquired by trading the new currency "Seraph" to a vendor in Oasis after doing Hyperius The Invincible and Master Gee The Invincible quests.
Source
Best Answer
Only boost time is affected by certain Relics(affects Boost Time, Boost Recharge Rate, and Boost Delay) you can find through a certain Mission. Boost speed is never affected; Boost speed is relative to the vehicle you use.
For instance, the Runner boasts a higher boost speed than the Bandit vehicle, but has a shorter boost time than the Bandit to compensate, as well as having greater mobility. Note, none of these factors are scaled with level.
Damage will scale with the health of the vehicle, in accordance to whatever level the leader of the party is. If playing in UVHM, the level of the vehicles damage and health will scale to the highest leveled player in the party.
I hope this helps!