Just installed a zex wet kit on my stock 2000 z28. What do I need to know so that I can get the full effect of the bottle without breaking my pocket too much.

 

What does the kit include?

 

Fuel management, bottle, nozzle, switch, fuel rail adapter, and purge kit.

 

Depending on your mods, the size shot, and timing, you might need to pull some timing

 

The car is bone stock dude I'm only spraying 55hp in it because it has 220k and I will be building a lower mileage motor to swap in later in the near future. So for now I decided to go the cheap route and spray it. Just wanted to know what kinda fuel and plugs are best to run with it for now.

 

I came across the kit for cheap so I couldn't pass it up. I'm new to nitrous and will like as much info as possible to get the best bang out of it. Do's and Dont's, tips, bottle pressure info, how to properly build pressure in the bottle all that 411 would be appreciated.

 

Never heard of a 55 shot but considering that's all you're spraying then you won't need to do anything. Pressure is best between 900-1050 psi

 

Me either until I read the jetting manual and it said 55hp lol

 

Hmmm...yep that's so small of a shot, and considering that you're stock with stock timing, I'd just throw it on and and enjoy

 

What's the most I can spray it with without having to pull time or do a tune?

 

That's hard to say since every car is a little different, but some spray a 100 shot on the stock tune just fine. Personally I wouldn't do it to my car

 

I have not sprayed anything with an LS engine before but have sprayed others.

General rule of thumb for timing pull is 2 degrees for every 50 shot , but 55 shot I would spray it and see if it has KR in the scans ( you really should scan it if your playing with spray)

where your shot is wet it gives added fuel enrichment so there is less concern than a dry shot but I am assuming its pulling fuel off the rail at the scrader valve ? good idea to put a fresh fuel filter on it and check fuel pressure with a guage to be sure your fuel system is up to snuff because now your asking your fuel delivery system to do more than it was designed for not that it cant handle fueling an extra 20% power increase it likely can but you will get addicted to spray and up the shot so know going in that you don't have a weak fuel system is good advice IMO.

I am sure there will be people coming in this thread with a lot more nitrous knowledge than me and they will want to know jet size , it will be stamped right on the jet , if the jet isn't loose in your small parts its likely in place inline , pull it out so you know for sure what your spraying , I own a couple kits and one of them is an adjustable dry with 5 jets advertised at 20/40/60/80/100 and I can tell you that data was not accurate at all , the "100" shot is much closer to 200 than 100 for example (.086 jet)

where does this kit spray the nitrous and the fuel at ? if the nitrous sprays before intake air sensor and/or maf those sensors would already jack up fueling as soon as they see the cold dense charge so assuming its spraying in a plate behind the TB ? is the fuel spraying in the same plate ?

I have sprayed what people would say is very recklessly on some cheap cars that I didn't care if they blew up and can tell you most cars will tolerate a fair amount of nitrous on occasion without issue , I sprayed a full weight 4 door v6 fwd gtp with my 86 jet many trips to the track dry kit running dead lean and nosing over the last couple hundred feet and all it did was melt electrodes off the plugs , throw plugs in it and do it again 12.1 @118 trap speed said mid 11's if I could ever get it to hook up , if it had enough fueling to make the 1/4 it would have surely trapped 120+. I am not advocating this just an example of what you shouldn't do but can lol eventually it would have chipped a piston but I couldn't get it to do it.. I think from what I have read on here about 100 shot is about the safe limit on a stock 4l60 convertor but typically people that spray have already added other bolt on mods that add power so you may be able to get away with more.

 

I just got it Saturday and threw it on I was like a kid at a toy store happy as hell and ready to feel that rush so I just put it on without doing anything to it(basic tune up wise). I need a nitrous gauge and fuel pressure gauge still. I sprayed it before the maf sensor directly into the tb with the stock lid lol. Which brings me here posting this thread to get more knowledge and know what to do when I put my build in whenever its done.

 

The fuel jet is 19 and the nitrous jet is 32

 

I just lifted this from a post on the interwebs , take any chart like this with a grain of salt as factors like bottle pressure , actual air fuel ratio , spray location, pattern, and balance of distribution between cylinders can effect actual results , here it is :

Here is a good chart for NOS kits (rated at flywheel):

HP--Single N2O--Dual N2O--Single Fuel
25------.024
30------.026
35------.028------.020
50------.037------.024------.020
75------.042------.028------.022
100-----.047------.032------.025
125-----.055------.038------.029
150-----.063------.044------.034
175-----.070------.052------.038
200-----.082------.047------.044
250-----.093------.055------.050

so your shot should be around 40 hp , but spray gives awesome power under the curve so it will feel like more than that plus nitrous comes out of the bottle so cold a small shot gives a result like really great density altitude does , I call it DA in a bottle lol

 

So if go with the next size jets which is 40 for nitrous and 26 for fuel I would be near the 75 mark?

 

Maybe 60 huh

 

close to 70 I would think by that chart... already looking to up the shot huh , I told you its addictive so be careful and wait for some ls1 wet shot experience to get in here and help you as you can see by what Ive done I'm a nitrous hack lol

 

Lol juuuust a little bit. I want to make sure I feel the right kick and watch my car pull away from all these coyotes and srt's without a problem for now lol. I just don't want to go up too high and BOOOOOM!!! Its the only car I have at the moment lol

 

You would probably get a lot more responses if this were in the Nitrous Oxide section.