i just read the tech article about calculating my injector size, but it never mentions anything about nitrous... what should i do if i am adding nitrous in the mix every once in a while... its a 250 shot, and yes my motor can handle it so i dont wanna hear anything about blowing the motor...

 

If it's a 250 shot, I'm betting it's a wet kit. If it is a wet kit, then there is no need to use a larger injector because the kit will add the extra required fuel. If you were running a dry kit, the injectors would add the extra fuel so you'd need injectors large enough to support the power of the motor and nitrous combined. But at 250hp, you aren't running a dry kit.