Velocity stacks

[OUTBOARDER]

Has anybody tried velocity stacks? Can you let me know how they worked?pros and cons

the stacks in pic are worth 2 jet size increase on modfied 45ss along with rest of intake system mods.

tuned length of reed valve two stroke is measured from tip of reeds to end of velocity stack.
TSR used to sell the tuned length software and showed effecive and peak rpms for diffrent lengths.

there are alot of things that can be adjusted to help intake SYSTEM. just putting on some aftermarket reeds really isnt all that