Number one, you should never use andro and nor-andro together. The enzymes that convert andro to test are the same enzymes that convert norandro to nortest. However, the enzyme has an affinity towards andro. There are a limited number of these enzymes, so when saturation is reached with andro, the nor-andro is being wasted.
Secondly, they are not very effective at rasing any hormone levels signifigantly for long enough to supress HPTA... The amount that it would take to do this would probably cost you in excess of $10,000 per cycle...
-Stew