Sometimes when I purged it would give really cold misty air, other times it would be clear. It seemed like depends more on how long the N2O was in the line. Maybe it warms up while it's in there? I don't know.

When I brought my bottle in I had pre-weighed it so I knew how much they could put in it. I would write the weight on a piece of maskign tape with my name on it very visible so they knew I had already weighed it. Anything below 1/2 full and you start running short onyour shot. !/2 bottle justnever performed as well as a full bottle. Before bringing your bottle in make sure it is frozen, put it in the freezer overnight. If you bring the bottle in warm they will have to force the N2O in which creates heat and pressure. You get less N2O. Bring it in cold and there is less pressure and you get more N2O. If aren't sure how empty your bottle is and there is no scale around you can shake it back and forth and feel the slosh of the fluid inside.

 

Thanks for the help again. I am pretty sure I got the shaft after reading your last post. I opened the bottle last night and heard a slurping noise (like when ya get to the bottom of a big gulp[8D]) and the bottle pressure wasnt going above 700, and that was after running the heater for awhile. I closed the bottle and purged it and seemed to just be air again. I took the bottle out and did just like you said. I put it up to my ear and moved it back and forth, and nothing, not a peep. This was after only running it the equivelent of 4 quarter mile passes. I then disconnected the line and opened the bottle to let all the pressure out and it discharged for like seven minutes, and not even a hint of a plume, just air. I think im going to have to find a new supplier, but not until I go see what there side of the story is. Hopefully they will see the ere in their way and give me a free refill(hopfully with some actual juice this time) My bottle is pre weighed from the manufacturer and it has its full weight on there as well. But I dont think it would have helped because it was full just not with nitrous. Thanks again

 

i am having the system installed tomorow ,what is a window switch do and is it nessasary with the zex system ? i was going to set it up for the 75 shot to be on the safe side ,also do i need a tune for this shot? thanks rich

 

Well, congrats first of all. The window switch is not necessary...... But, I would recommend it, to get the most out of your system and as safely as possible. It will allow you to adjust when the system (even when armed and under full throttle)will actually start to inject your nitrous fuel mix. This is important because you do not want the spray to hit while your under 2500 RPM or when your about to hit the rev limiter. It will help prevent detonation. I currently just keep a close eye on my rpm and don't rm the system until I am around 2700 rpm and I have been shifting around 5800 rpm. Which is all well and good but in an all out race situation your gonna have enoughgoing ono worry about when to arm the system. The switch will also allow you to do a complete first gear lock out to stop the system from engaging until you are in second to make sure your actually getting somthing out of fist other than a large quick smokey burn out.

As far as the tune is concerned, I have been told that you should be fine on a stock tune when using a 75 shot and running the stock intake. But I personnally would get one to be on the safe side. Also make sure that you have a way to monitor bottle pressure. The zex pressure gauge is fine, but for the ultimate in street use I would go with a electronic in car nitrous gauge. This way you can make sure your system is at optimum pressure and your not spraying under low pressure and also that your bottles not about to burst at the seems. Also, a bottle heater can be a wise investment to help your bottle maintain a good operating pressure. I just got my bottle opener working so I am pretty excited about the thought of not having to open the bottle before I go anywhere and closing it when I get where I am going (usually never using the nitrous and then just purging/wasting the juice in the lines) Now I can open and arm the system only when I need it.

Have fun and be careful

 

i will get the window switch ,i guess it does not come with the system,i do have a gage on the bottel but that is in the trunk ,i did not get the heater i thought that if i run with my seats down it never gets that cold in the car, if before i was running 13.4/13.6 do you think i can get into the 12s with the 75 shot thanks rich

 

Well i dont know what the effect on your times will be exactally but I am sure you will run low thirteens maybe high twelves. As far as the heater goes, I live in texas and just the slight temprature change from day to nigh effects the bottle pressure greatly. I would run it as a saftey feature. But if your just running it at the track I am sure you can figure out some more field expidient measures to warm the bottle as you need it before runs.

 

As far as the tps it kicks on at around 3/4 pedal. For the tps wire did the exact same thing as simon.You definetly are out of nitrous and it probably wasn't filled right.The place I get mine filled told me to freeze the bottle and then when I get there they put it in their freezer for an hour before filling. Don't think this is really good but hey a free pound or two of nitrous works for me. So basicly just listen to simon. I would recommend a window switch for the street. I don't have one and don't see much of a reason for it at the track(only place I spray). Woohoo here are my times stock tires n/a 13.4, stock tires 75 shot 13.1, drag radials n/a 12.9, drag radials 75 shot 12.4. I would not spray on the stock tires in any gear under 3rd or look out. I managed to spin the stock tires at the track in 4th gear at 100mph+ lets just say I was done for the day after that and never returned to the track with the stock tires again. Drag radials never leave home without them.

 

I just installed the drag radials on my fr500 rims and this thing just sticks and goes now. WOW

 

i have the zex kit on my 06gt automatic, set up for a 100 shot, and all bolt ons.. i just bought the window switch.. my question is where the HELL does the tach signal wire (green wire) from the window switch tap into ? ?
i have a TCI 3k stall, FMS 3:73's 20" nitto nt555's w/ eibach pro springs drop, and full bolt -ons w/ the bama 91race tune, on this car.. so i imagine i will be launching at 2900 or so. what should i set the activation window on the switch for? 3300-3500?? will it light the tires up still in first gear especially since they arent slicks or drag radials even on the street? for the dragstrip i will be running 15" wheels and slicks. but this car doesnt see much track duty. i will be getting the LCA's swapped out pretty soon to.

 

My tach signal is hooked to the yellow wire on the top of the coil. It's not a window switch, but it's where the signal comes from.

A 100 shot will generally yield zero traction anywhere on street tires.

If you can set the window switch for a particular speed than I would do that.

I sprayed right out of the hole with a manual. Never any problems.