Nitrous purge question

[TooFast]

I installed my nitrous kit last night. It is a NX stage 1 wet kit. I purged it a number of times at work today for some buddies. I also used it for about 5 passes, roughly 1/3 mile each. Now when I purge it is no longer a white could. It just sounds like a big rush of air. Could it already be out? I am running a 75 shot. It is a 10lb bottle. I do not have a gauge on it.

 

[lordnikon_04]

It could be out but do yourself a favor and get a gauge.

 

[TooFast]

That was going to be my next purchase along with a bottle warmer. I called around to four performance shops in town and not one stocked a nitrous pressure gauge.

 

[Locke]

Order one from wherever you got your kit from. Or you could try http://www.mscdirect.com, any cryogenic gauge would work.