A big hit of nitrous will need to be softened a little. Meaning the bigger the hit the harder it beats your engines internals. So , you want to use a progressive controller also so you can bring the big hit in "softly". Also with a big hit you get traction loss so its another plus to bring it in "softly". With a progressive controller you could have a mild running engine for the street and give it a good dose of nitrous on the track , if your internals are up to snuff.