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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 01-23-2004, 02:12 PM   #1
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Default NOS Finially............................

Finially got my NOS NOSZLE setup and will be installing it in the spring...... Can't wait to dig my baby out of the garage.... until then the 90 lumina lives on....

Steve
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Old 01-23-2004, 02:17 PM   #2
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MMM NOS!!! How much of a shot are you going to use?
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Old 01-23-2004, 09:12 PM   #3
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I'll Start small .... around 75 til I get the thing trimmed out. Went to 24 lb injectors this fall to help with the load. Feel that I might need a larger fuel pump too. Also gotta get some colder plugs.

One other thing ... I got a L88 style hood scoop(cowel Induction) so I'll be changing the CAI to receive the cool fresh outside air. Will have to build a filter box and get some more custom bent tube to finish her.

Steve
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Old 01-23-2004, 09:43 PM   #4
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i didnt think you could do NOS with an SC. Does it compress in the SC?
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Old 01-23-2004, 09:56 PM   #5
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What is it? Dry, wet, direct?
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Old 01-24-2004, 01:14 AM   #6
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In your sig it says wet system.
From what we've heard you dont want to spray fuel on your sc rotors thats why most run the dry system. For an all out wet systems you need the modified injectors at $1600 for 6 of them Definetly the way to go if youve got the bread
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Old 01-24-2004, 04:32 AM   #7
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Yeah you definately don't want a simple wet system to inject fuel before the supercharger. There are 100 things wrong with doing that but namely puddles of gas forming inside the supercharger then once it heats up enough babooommm, supercharger goes flying up through the hood. The main problem with a dry system is aiming it away from your MAF sensor, you don't really wanna spray that too much. I ran a dry system on my car and put about 5 bottles through it with no aparent damage, although the system was sparatic in its power. Even inspecting the supercharger didn't reveal any noticable damage to the rotors and running your hand across them, although very dirty, didn't reveal any rough spots which would indicate peeling. Doesn't mean there wasen't any, or that it isn't a possibility, I just didn't see any on mine. I still have the system but won't be using it until further information is found about it, especially with my current setup. Before I got mine I called both Holley and Zex to ask them about using a dry system on a supercharged application. Both places said its OK to do and they've heard of it being done plenty of times. They also added that you can expect a 10-15hp increase in the advertised HP rating of the nitrous, assuming it was hitting the advertised HP increase before hand. So if you're looking for a 75 shot, which is the most you want to throw at a semi stock v6, then what you really want is a 55-60 shot. When looking at a dry system, or nitrous in general, you really want to look at the application you're trying to use it on. I see you have a smaller pulley installed. Great for daily performance but it creates more heat and forces the fuel system to run a little harder. Then you're throwing in nitrous which needs more fuel to keep from frying your pistons and you're dancing with the devil. I see you have larger injectors and that'll really help out, I think there is still some debate as to the capabilities of the fuel pump though. I think your fuel system should keep up, but always have it in the back of your mind. If you're flying down the track and an injector clogs or the fuel pump decides its had enough its going to hurt your wallet. When I ran nitrous on mine, if I remember correctly, most of it was done before I got my Jet Chip. Which is another thing you need to think about. Most of the gain you'll get from a chip, depending on where you get it, may very well come from just advancing the timing. Yet when you use nitrous you need to retard the timing. So if you get a simple chip that 90% of its gains are from advanced timing you're going to lose 100% when you activate the nitrous and the knock sensor retards your timing like a madman. For a 75hp increase it seems like a fair trade for the few 1/4mile runs you're going to run with nitrous, just have to take that into consideration. All things considered if everything is accounted for and it is properly setup nitrous can be a fun addition but its when you get carried away and put a tiny pulley on it, grab a chip, add a "CAI" that really only pulls the hot air from under the hood, and other things like that then add nitrous you might be buying a new engine. Right now the only "plug & play" system is the direct port injection which bypasses the supercharger in all. Point of all this? If you're broke like me, get a dry system and either install it after the MAF sensor or talk to one of our friendly vendors about getting a nitrous plate to install after the TB. You should be O.K. with a dry system but you have to keep it in mind with the rest of your upgrades. If you win the lotto, go for the direct port. Hope this helped and I didn't go on a rant about things you already knew
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Old 01-24-2004, 11:50 PM   #8
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The NOS Noszle system is a new type of nitrous setup that is a direct port which sprays nitrous and fuel directly into the intake under the Fuel Injectors. It'* an expensive setup ($1200) But it will be the best wet setup for a SC car.

Attached is a link that will explain the system.

http://www.holley.com/HiOctn/ProdLin...NS/NOSzle.html

Steve
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Old 01-25-2004, 12:24 AM   #9
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i was looking into that system also, i do have two questions, does it include the adapter to connect it to our schrader valve fuel port on the fuel rail?
and also, what size are the smallest nitrous jets?
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Old 01-25-2004, 05:48 AM   #10
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Most modern nitrous systems are similar to the Zex setup they started not too long ago, which is bottle regulated with other various failsafes. My understanding is that even an NX wet system will not harm a supercharged 3800. I'll look into this more if time permits.
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