For the 6 speeds, it's more a matter of your eye/ear/touch coordination, as your ability to run through the gears correctly has to influence any times, plus having a brass pair of you know what, always helps...

Eye ~ if your a tach watcher
Ear ~ if it's engine noise
Touch ~ 2nd to 4th will get their attention...

I'm also convinced that a NW dual CAI, is the way to go, it might not perform better than a single, but it sure looks nice and hefty...