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Old Dec 2, 2003
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NITROUS questions NOT covered in the FAQ

so i read the faq and it was very informative, but there are a few more questions that i'd like to ask. first off, does anyone have experience with an auto tranny? then, as far as the actual use of a nirous kit: i know most kits are have throttle switches to engage at wot. correct me if i'm wrong...there's typically a switch to turn on the throttle switch? does that switch turn the bottle heater on as well? i understand that you gotta hit a switch before the throttle sensor is active. so consider this following scenario:

i'm driving regularly, and some guy is pickin on me to run him, and i know we're about to race. so i flip a switch so the throttle sensor would be activiated? do i need wait for the bottle warmer to then do its job before i can spray? i mean..by the time the bottle heats up to proper temp....the race is over.?... someone correct this scenario so it makes sense. thanks.
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Old Dec 3, 2003
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The bottle warmer is turned on by a toggle switch you mount in the cabin. It is completely separate from the throttle switch.

The throttle switch is a safety switch which opens the solenoids. It has to be WOT and the turn on switch in the cabin has to be activated. This prohibits partial throttle activation....
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Old Dec 3, 2003
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what about direct port? i have a chance to get a direct port kit.... good/bad/sux? also when is the best time to use the nitrous....i know at wot but while im doin 50 on the highway or from a dead stop?
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Old Dec 3, 2003
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hey i asked this somewhere, but i'm gonna ask again for second opinion purposes and since this thread was started i'm not gonna start one. ok if i got nitrous, which i do want to, can the 10lb bottle the send fit in the spare tire compartment good, but if you're not sure and have a bottle, can you give me the dimensions on the bottle so i can guesstimate and measure the compartment myself.
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Old Dec 3, 2003
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goto a local speed shop and say you wanna measure their 10 lb bottle
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Old Dec 3, 2003
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Direct port is more efficient than other spray kits, but is more work to install.

You can use nitrous anytime (above like 3K rpm), it depends on what power levels you are using. It won't be useable in first, might kick the tires out in second (depending on hp levels), and will be IDEAL in 3rd and 4th.
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Old Dec 3, 2003
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Wet kit is only available for our cars.

remote bottle opener so you dont have to open your trunk to open the bottle.
Bottle heater turned on to get pressure up to 900 to 1200psi.
purge, not necessary but it brings liquid nitrous up to the solenoid (cuts about 2/10ths
of 1/4 mile time.)

WOT after 4K rpms and only in gears 2 3 4
feather the gas pedal in 1st and don't slam it down all the way until you are in 2nd.
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Old Dec 3, 2003
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ok i think im gonna go with the NX efi kit 35-50-75 shots....n e thing else i should know? when does the nos shut of...when i take my foot off the gas?
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Old Dec 3, 2003
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Originally posted by kjgracing


WOT after 4K rpms and only in gears 2 3 4
feather the gas pedal in 1st and don't slam it down all the way until you are in 2nd.
how can you get maximum acceleration in 1st then without having nitrous kick in?
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Old Dec 3, 2003
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n e thing else i should know?
Doing the install of NX Express on my 01' the only difficult part if you can call it that was installing the "T" fitting into the fuel supply line. It's a VERY tight fit! BTW mine too is AT.

very nice walk thru here
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Old Dec 3, 2003
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Originally posted by reytito
how can you get maximum acceleration in 1st then without having nitrous kick in?

You don't, but you'll never hook up in 1st w/ the nitrous on.... Hence only using it when you have traction...

Spinning the tires and bumping the rev limiter when on the juice causes some problems....
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Old Dec 3, 2003
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Originally posted by Havok2K1
You don't, but you'll never hook up in 1st w/ the nitrous on.... Hence only using it when you have traction...

Spinning the tires and bumping the rev limiter when on the juice causes some problems....
yeah i figured that was bad. so does nitrous do much for quarter miles times or any race from a dead stop? cuz the sloweed start in 1st will set you back quite a bit right? and the nitrous will boost you a bit once you get goin in other gears....making it even out to like a unjuiced run?

Last edited by reytito; Dec 3, 2003 at 11:42 PM.
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Old Dec 4, 2003
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Dont forget he is using it on an automatic, so HP to the ground and probability of wheel spin is much less. I use mine all the time from a torqued up take off in first gear(automatic trans) I think my launch rpm is around 2800 give or take a few. I dont kick the NoS in until after i launch. Seems like it handles it fine.But then again i got a ton of bricks in the trunk (stereo equipment) to control all my acceleration

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Old Dec 5, 2003
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i think im just gonna get a manual switch..rather than a throttle switch. ill have more control over when and how long i spray, wot or not.
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Old Dec 6, 2003
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Beware that if you only use a manual switch, you will have no safety net for if the vehicle is not at WOT. You'll have part throttle nitrous injection. Just be careful, sometime insurance is worth it....
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