Ok, for those of us who gleefully cut off our Helmholtz resonators (learn something new every day)...
What do the more learned among you think about this information?
Helmholtz resonators 
Caution: MUCH geek-speak here!
Although this dumb firefighter was able to get the gist of it.
- They dampen resonance... Duh.
- They make the intake air act "springy" so it fills the combustion chamber more effectively giving us better combustion.
Hmmm, not so sure whipping out that SawZall was such a great idea after all...
Do we need to try to get someone to flow bench or dyno the with and without resonators versions to see if there's a real difference? Seems to me that would be the only answer. Dyno both versions on the same truck and see what the results are.