Pretty much the consensus is anyting can take a hundred 50 shot.. once you start getting over that then ring gaps and piston selection start to become a little bit more necessary...
also I would think duration of how long you're holding the nitrous open as well. If you're just looking for a little second and third gear burst or are you looking to shoot it right off the line and hold it all the way down the track...
I personally don't have nitrous ring gaps and I do have forged pistons and all.
When I get to the track and take a few na passes like most I usually start settling down and getting used to the power. After that I was thinking of giving it some short bursts in 3rd gear and 4th gear.
Again my setup is much more for knowledge and learning then trying for a certain et or setting the world on fire..
Or my engine on fire for that matter LOL...
