I split a field of corn on corn last year.  When I ran the yield maps it did not show any yield advantage to the N Pact. 

On the brochure our local suppier sent me it says:

" 1 gallon N-Pact = 2.67 lbs N, This means N-Pact has the crop effect of 13.3 lbs N for every gallon foliar applied. "

1 gallon of N-Pact is $7.50 an acre.