After near a 5 year hiatus I am finally installing the nitrous kit back on my yellow car. When I had the stock 2.8 with automatic I put this kit to have some fun. The 75hp shot made a nice difference and ran about 5-6 bottles before a transmission fluid cooler line blew off and I stopped the car to put the 3.4 I took out of the red car.
So after many obstacles I finally got this car running in spring of this year and now has a 5 speed with a slightly modified 3.4. It has the Truleo intake, 272 cam, FOCOA headers and most of the other common little things we do to these engines.
I did a search on nitrous and found almost nothing from the latest (non archives). So maybe it seems very few has interest on this. Still I'll post what I did, what I am using and how it goes. At some point I plan to take it to the dyno (maybe January) and measure the difference. So let me know if some of you are interested on this.

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Red: TPI V8 + 6-Speed Yellow: Nitrous 3.4 + 5 speed White: 3800SC auto (All 88s!)
304rwHP/366rwTQ

I'm interested in how things go. Most people I think are afraid of nitrous based of the explosive things that can and do go wrong with kits. I think it's a neat idea, but I'm a little worked about the horror stories I've heard of long term use

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Good. This is what I have istalled. I'll ID the components I am using.

This is the hardest part to install. Buch of hoses and wires/relays. #1 is the fuel cut-off switch and is a very important item. If fuel preasure drops it will kill power to the system. #2 is the fuel solenoid and it connects on the side to the fuel rail and on the bottom to the hose that provides fuel to the nozzle. This is a wet system. #3 is the nitrous solenoid. #4 is the preasure gage.


Here you can see the fuel connection. You need to remove the shrader valve.


This is the nozzle at the intake. Both, fuel and nitrous go in and a spray combo goes out into the intake. Here is where you change the jets to adjust for power level. There are jest for both, fuel and nitrous.

I had one....just so expensive. You can go through a whole bottle in a few minutes.

quote Originally posted by RotrexFiero: I had one....just so expensive. You can go through a whole bottle in a few minutes.

Sure if you use it like a turbo. I just found out that around here it is still at $3.50/lb just like 5yrs ago.

Be sure to vent the safety valve on the bottle via a hose to the outside

Yay for nitrous
http://www.youtube.com/watch?v=LcrcChpfEDw

Back when I bought this they wanted me to buy a bottle heater. I said no because I thought living in south FL is hot enough that I wouldn't need it. Later on I found out what a big mistake that was. It is not above 85°F all year round here. You need that bottle pressure at 950psi to get the best performance and to extract the last ounce of it. Yesterday I went for a test drive. I knew the bottle was low but pressure was a little above 900psi. I was getting 10 AFR and it felt and sounded like cycling on and off. I'll fill up the bottle and try again. If it still does that then I need to check if the fuel pressure is keeping up (cut-off switch cycling on/off) or if the nitrous solenoid is sticky. With AFR at 10 the fuel seems to be coming out ok. Oh, and I need to get a bottle heater. Today may be the last day I could do a good test without it. A cold front is coming and temps will stay at 50°-70° which is not good for it...

quote Originally posted by Alex4mula: Today may be the last day I could do a good test without it. A cold front is coming and temps will stay at 50°-70° which is not good for it...

Keep in mind that this "COLD FRONT" is a South Fla version of a cold front.

quote Originally posted by Alex4mula: Sure if you use it like a turbo. I just found out that around here it is still at $3.50/lb just like 5yrs ago.

Honestly, what is a reasonable use for nitrous on the street? Passing? Occasional street race? So before you do these things you have to heat up the bottle, check the pressure, and then watch A/F ratio while your driving.

It's nice to play with but that is about it. Even at $3.5 a pound it gets expensive.

I think that is why you dont see anyone using it. There was a craze about ten years ago and all these kits came out.

Wow. Haven't run nitrous in probably close to 25 years. We were choking when refilling a 10lb bottle went over $20. I can't imagine using it at today's prices. Sounds like it's no longer "cheap" HP.

I am not debating here if it is cheap or reasonable for street use. I'm just sharing my experience for anyone intereted. You can follow if you like. I can afford to play with it so that's what I'm doing

Understood. I had a lot of fun with nitrous, it was my first power adder. I just got frustrated with it and I almost unconsciously vent that frustration when I hear about NO2 on a car. I guess for the track it is good.

Just be careful with the solenoids, especially with them mounted over the exhaust. I hardly used mine and they started to leak.

quote Originally posted by RotrexFiero: Understood. I had a lot of fun with nitrous, it was my first power adder. I just got frustrated with it and I almost unconsciously vent that frustration when I hear about NO2 on a car. I guess for the track it is good. Just be careful with the solenoids, especially with them mounted over the exhaust. I hardly used mine and they started to leak.

I definitley agree that this is not good for street unless you are the kind looking for a street race all the time. I am not like that. This is like a toy I never had for me. On the street you can easily use a bottle in one day. At $35+ per bottle it is like a cartoon a day for a bad smoker. Not cheap! Better swap a 4.9 or3800. Which brand of kit/solenoid did you use? Up to now no problems with the NXs.

I am down with this as well Alex. going to get a kit after the new year for my 85gt. going wet and 75 shot as well.

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A real 75hp shot is nice and you will feel it. Very evident. I tried a 30hp shot back when I bought the system and it was lame Some specify their jets at crankshaft HP and others at RWHP. NX does the latest. Damn, I thought today was going to be a little warmer. It is at 68° already This is the bottle heater I think I will get.



http://www.dynotunenitrous....iew.asp?idproduct=17

I cant remember what kind of kit I had, but I do remember the bottles are dated. Once they expire they will not fill them.

Here is an idea. Since the coolant lines are right there, just gets some rubber hose, tap into the coolant lines, and run them to the trunk. With some cooper tubing, or even more rubber line, make a cozy nest for your nitrous tank. You can even get a spare heater core and small fan.

quote Originally posted by RotrexFiero: I cant remember what kind of kit I had, but I do remember the bottles are dated. Once they expire they will not fill them. Here is an idea. Since the coolant lines are right there, just gets some rubber hose, tap into the coolant lines, and run them to the trunk. With some cooper tubing, or even more rubber line, make a cozy nest for your nitrous tank. You can even get a spare heater core and small fan.

LOL! To have an interheater instead of an intercooler I think the blanket type is easier. I heard that some experienced racers also use a torch

some of those who used a torch are no longer with us.

Has anyone used nitrous on a 3800SC?

quote Originally posted by IIKool: Has anyone used nitrous on a 3800SC?

I know at least many SC/turbo non Fiero owners use an ICE system with a ring nozzle where they spray the intercooler with good results.

Explain Ice System. Had a 409ci in a 57 chevy late 60's early 70's that we used to ice down the radiator between runs.

quote Originally posted by IIKool: Explain Ice System. Had a 409ci in a 57 chevy late 60's early 70's that we used to ice down the radiator between runs.

I think ICE is the namebrand of one of the systems. Basically, on cars that have an external intercooler like at front of radiator they put a ring pipe with little orifices that spray the cold nitrous to the intercooler fins. This gives an extreme cold shot that cools quickly the intercooler (air or water) and thus cools the charge. For the 3800sc with the intercooler intagreated into the intake probably it would be better to use alcohol injection to cool the charge. There are several kits for that already on the market.