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Old 02-13-2001, 04:34 PM   #1
Xscreamer
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1993 Rx7 R1
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Wink Well I Did It I finally Caved In!!!

Well I couldnt help myself i finally order a Zex Nitrous Kit It was cheap power and seems to be the safestest kit due to the fact that it doesnt work unless your at wide open throttle. I like the 55 jet and possible the 65 jet, but i dont think that our engines can handle the 75 jet? Does anybody think that my stereo that puts out 135db will cause any problems to the bottle which will be right next to it? I just want your guys opinions on my choice. See you later with a big purple bottle in my trunk

~Brandon
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Old 02-13-2001, 04:44 PM   #2
Sunrise City Rider
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I don't think that its the safest kit for any engine, considering its a dry kit. Also, all nitrous kits have a switch to arm the system and nitrous is only fired into the engine at WOT.
Zee
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Old 02-13-2001, 05:31 PM   #3
TurboDude390
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Good luck! I have been wondering how this kit would work on my '00RS. I've done the turbo route on 23 different cars in the last 19 years and I am ready for something different. I have also been wondering about the injector size and if they will be large enough for the needed flow increase.
The way I understand it is that this system increases the fuel pressure based on what the controller is seeing as present nitrous tank pressure.
Let us know how it works for you.
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Old 02-13-2001, 05:36 PM   #4
Xscreamer
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Zex says that the Management computer takes car of all the mixtures, and that it actually works better on stock injectors.
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Old 02-13-2001, 05:37 PM   #5
BMW Man in 2.5RS
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i dont know what nitrous kit your looking at but zex sells the only kit that comes with a brain that meassures fuel preasure throttle postiton to make sure that there is enough fuel going in with the nitorus and that throttle is all the way open. Its a nofail system. If you buy a kit from nos all you get is piping and a bottle no brain at all. By the way i do not endorse nitrous at all. Have you ever been in a car when the engine blows on NOS, i dont care what you say it is the worst sound in the world. My friend had a NOS kit on his civic and he forgot the pill so he was shootting we figure 200-300 shot into a stock 1.5 liter civic engine with no added fuel. Needless to say i now hold in my hand a peice of his rod...bent and broken. My friend in a probe gt will be putting the zex kit on his car but he is rebuilding the botton end and upgrading the whole fuel system. This is the only good semi-safe way to run NOS. Anything else will just give you a ragged motor in about 20K miles no matter what kit you have
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Old 02-13-2001, 09:27 PM   #6
Aspen
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BMW Man,

Don't forget about the Venom system which are higher in price but also has a microprocessor control that takes throttle position, bottle pressure, a/f, etc. into account.

BTW, Dry kit = bad is a common myth.

It's all in the tuning(a/f and ignition timing)
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Old 02-14-2001, 05:44 AM   #7
nikkicalves
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Nitrous is a lot more dangerous than Turbo. The disadvantage is you can only use nitrous on 1/4 mile. it has no benifit whatsoever on a track. You have to be very careful of your timing, if you inject the nos too early/motor isn't hot enough, a piston will shoot right through the head. But nitrous will definitly help you get closer to 11s or 12s, if that is what you want.

Nick.
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Old 02-14-2001, 05:50 AM   #8
nikkicalves
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BTW, I would upgrade the fuel system, eg: Throttle body, injectors, and fuel pump. and do you have any current mods?
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Old 02-14-2001, 06:19 AM   #9
Xscreamer
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The only engine mods that I have are a custom intake like Cobb's, but i have a place to put my MAS since i have a MY99, and a Apex NI with 2 1/4 piping. I also have a unothordox racing pulley. Other than that nuthing. The kit comes with a 55, 65, and 75 jet i doubt my engine will ever see that 75 jet unless i built my bottom end, and i plan on using the 55 on the street and 65 on the track.

~Brandon
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Old 02-14-2001, 08:05 AM   #10
BMW Man in 2.5RS
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I know about the venom kit but for some reason i have heard bad things about this kit. I have heard that the computer they use has to much protection even though you can have enough when it vcomes to nitrous. But some people say when they want it its not there becuase there are to many fail safes. I dont know this is just what i heard but i would still go with the zex kit though like i said before im not a fan of nitrous. Im not a fan of the quarter mile im more into the twisties i.e. i owned a BMW but if thats your thing go right ahead with it.
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Old 02-14-2001, 09:06 AM   #11
Xscreamer
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From what I understand and read about the Zex kit is that even though it is a dry kit is the safest aviable next to the $2,000 Venom kit. I dont believe that there can be to much protection when i comes to nitrous, and according the manual if the engine isnt at WOT the nitrous isnt injected, which is fine with me.

~Brandon
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Old 02-14-2001, 03:18 PM   #12
Kevin Thomas
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Xscreamer,

Congrats on your kit. I hope you have as much fun as I have been having for over a year now. Yes, Nos can be just as bad as a turbo and/or a supercharger. Running lean is running lean. Running lean could even be a problem in N/A trim (And it is with intakes added on some 2.5RS's). Just don't abuse it like anything else (Ex: too much boost but in your case, too high a jetting) and you'll be fine. Your kit is probably even more safe than running some of these turbokits. At least the computer is already tuned for it. Take care!

BTW: I have yet to hear about Nos blowing up a 2.5RS's engine. If mine blows, I don't count.


[This message has been edited by Kevin Thomas (edited February 14, 2001).]
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Old 02-14-2001, 04:45 PM   #13
Xscreamer
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Hey does anybody here think that the EJ25 can hold a 75 shot of nitrous occasionaly. Unless I get some expert opinions i dont even think ill put on the 65 shot though.

~Brandon
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