Well, they do serve a purpose! I like them personally! Apparently not too many people have one, or just no one responded. Lol...do you have led's to light up the purge? I think it's cool, but I'm not gonna do it.
purge kits do have a purpose, for those that spray notice the difference. That extra second or two that it takes for the n2o to run from the bottle through the 8-10 foot line into the motor, can make a huge differnece in a 1/4 mile run or any time attack.
When you purge you have to hit the buttun at least 3 times or sometimes hold it down for the n2o to come out fully.
The people at the meet today in NY got a demonstration. The n2o came out a little and soft for the first purge but by the 3rd and 4th it was strong and plentiful, and thats what you want going into your motor for the full effect.
BELIEVE me I love the purge, though. I scared the hell out of my dad yesterday with it. I asked him to take a look and see if he thought me one tire was low on pressure...than he got a purge in da face.