Hi..im expecting to get my Dry nitrous kit running this upcoming thusday night. I am using a NOS nozzle, I want to go a bit at a time....should I start with a 50shot? or less?  Im not expecting to go above 75hp.
can you guys tell me the jet numbers from nos to get...25hp, 50hp, 75hp
another question is.....are colder plugs a MUST or will I be ok by using my current ones...which are boch platinum. 
This is going into a Cavalier 2.4 automatic with short ram intake, headers and magnaflow exhaust.
Thanks I appreciate your help.
 
I'm kinda new to the nitrous game too,  but i'm sure you need different spark plugs.  FOR SURE.
I found this link on the forums a while ago, it should help you with the jet size.  
http://www.robietherobot.com/nitrousjetcalculator.htm
I'm aiming for a 55 dry shot this summer.
 
 
Colder plugs will cost you around 10.00 or less...put them in.
You didn't tell us which motor you have, but for testing, I would start with a 40-shot and work your way up from there.  I used to have the part numbers memorized when I used to spray all the time.  But alas...now I don't.  Call NOS tech support for the exact numbers.
 
 
if it helps at all, my jet sizes are 42 n2o/ 22 fuel for a 75 wet shot..

12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP  333.6 WTQ [10.1 AFR]
 
 
why a dry shot?  What makes you think that its a good idea?  Would you add a blower without adding fuel?  How about a turbo?  NO!  So what makes nitrous, which is a power adder, the exception?  I don't get it...