I think I got confused with revup...lol.

 

Nissan "slapped" a larger velocity stack on the revups most likely to increase low end power by lowering the optimum rpm range for the velocity stack to counteract the low end power lost by the revup engine and plenum

 

But the increase in low end throttle response obviously didn't affect the ultimate goal hp or torque band of the revup motor or else it wouldn't dyno like it should.

It's odd, my informal research into v-stacks of old maximas reveal that v-stack lengths varied over the years. From the super short version of the non-rev up Gs to lengths longer than the revup Gs.

 

Nope. Its hard to say exactly what will happen because in this case the velocity stack is all the way at the end of the intake tract. Most of the theory for velocity stacks is in regards to use on independent throttle body setups or similar carburated setups where the distance from the horn to the combustion chamber is much shorter. The effects of a velocity stack are thus muted. In this case, a larger velocity stack *should* help all around, but not by much at all. The "tuning" will be pretty much impossible to tell without a flowbench/dyno to do testing on.