Sounds like you have a pretty nice setup on your bike being that it's a wet kit with a progressive controller,Im guessing your bike has probably been tuned on the dyno as well and is probably set up safe.Usually when using nitrous,a pop is a bad thing you want to try and avoid.It can can from a number of different things but usually you get a lean pop"a bad burn it down type of deal" especially from people who like to run big dry kits and overtax the factory fuel system so it ends up going lean on the top end where it needs the fuel the most.You can also get a pop if you timing is really aggressive or a fouled plug or if the system isnt purged properly but the purge is more of an issue with cars where the lines are longer and can have alot of air in them.But as long as your not getting any bad pops,studders or detonation I wouldn't worry to much,sounds like you did things the right way.I have quite a bit of experience with nitrous drag cars,not so much motorcycles but it's mostly all relevant,but I will tell you that Daniel "Goldenchild" of cloud 9 is probably your best bet for any nitrous questions you might have,his number is on the the front page.Nick